CN113064915A - Optical cable line route census operation method - Google Patents
Optical cable line route census operation method Download PDFInfo
- Publication number
- CN113064915A CN113064915A CN202110287167.0A CN202110287167A CN113064915A CN 113064915 A CN113064915 A CN 113064915A CN 202110287167 A CN202110287167 A CN 202110287167A CN 113064915 A CN113064915 A CN 113064915A
- Authority
- CN
- China
- Prior art keywords
- optical cable
- point
- route
- bearing
- laying section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/24—Querying
- G06F16/245—Query processing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/29—Geographical information databases
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Databases & Information Systems (AREA)
- Data Mining & Analysis (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Computational Linguistics (AREA)
- Navigation (AREA)
Abstract
The invention discloses an optical cable line route general survey operation method, in particular to the optical cable maintenance management field, the invention dynamically presents the optical cable line route around the environment where maintenance personnel are located by combining a satellite map with GPS coordinates, and the maintenance personnel match and compare the system route information with the on-site optical cable line by combining the modes of point selection, point dotting, occupation, point deletion, split, confirmation and collection through a mobile terminal, thereby quickly realizing the general survey of the newly-accessed optical cable line route, quickly realizing the verification of the stock optical cable line route, effectively improving the standardization and the accuracy of the optical cable line route data, further avoiding the redundant data caused by the general survey, and the invention can directly realize the general survey of the multi-point route of the optical cable line and the calibration of the optical cable line route at one time through the mobile terminal, thereby achieving the simplicity and convenience of the optical cable route general survey operation process, intuition, convenience and high efficiency.
Description
Technical Field
The invention relates to the field of optical cable maintenance management, in particular to an optical cable maintenance accuracy and normalization which rely on optical cable line data, and relates to an optical cable line route general survey operation method which can effectively solve the problems of convenience and high efficiency of optical cable route general survey and ensure the normalization and accuracy of line data.
Background
The optical cable line route refers to a rod, a pipeline or a groove laid by an optical cable and is straight-through from one end of the optical cable to the other end of the optical cable. The optical cable line provides load bearing support and safety protection for the optical cable. The optical cable maintenance comprises daily inspection, hidden danger elimination and fault first-aid repair, is an important measure for ensuring the safety and the availability of the optical cable, and plays a significant role in the operation of the modern telecommunication network.
With the popularization of 5G technology, the demand of the existing optical cable is increased rapidly, the optical cable is expanded to the maximum 296 cores from the previous single core, however, the more the optical cable is buried, the greater the maintenance problem is, and particularly with the lengthening of the operation time of the optical cable, the optical cable deterioration becomes an important factor influencing the network safety, the stock resource utilization rate and the service opening efficiency. Therefore, how to correctly and quickly find the optical cable becomes a problem which needs to be solved urgently, and at the end, because the existing optical cable line routing has a very messy problem, the correct and quick finding of the optical cable has a great difficulty.
The traditional optical cable route general investigation method comprises two steps of route routing and optical cable calibration, wherein maintainers firstly report bearing point connection laying sections through mobile terminals, and then calibrate the optical cable route based on the route, so that the operation is complex, the general investigation efficiency is low, and the redundancy of the line data is easy to occur.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides an optical cable line route general survey operation method, which aims to solve the technical problems that: the traditional optical cable route general survey method comprises two steps of line routing and optical cable calibration, wherein maintenance personnel firstly report bearing points to connect laying sections through a mobile terminal and then calibrate the optical cable routing based on the line, so that the operation is complex, the general survey efficiency is low, and the problem of line data redundancy is easy to occur.
In order to achieve the purpose, the invention provides the following technical scheme: an optical cable line routing census operation method comprises the following steps:
s1, selecting optical cable and route display unit:
and selecting the optical cable to be generally checked, displaying the existing route of the optical cable through a satellite map, dynamically displaying the peripheral line of the position of the maintainer by combining a GPS, and displaying the start point and the middle opening point of the optical cable by the newly-accessed optical cable.
S2, data processing unit software operation method:
a. selecting points:
the starting location point is determined by the point selection operation and maintenance personnel based on the division of responsibilities, and the location is a bearing point contained in the cable route on the map.
b. Dotting:
and clicking and dotting by maintenance personnel at the line bearing point and the position, popping up a page of the newly added bearing point, automatically acquiring a gps coordinate, submitting the page to the newly added bearing point, establishing a laying section between the initial position point and the newly added bearing point, recording the laying section into the optical cable route, updating the newly added point into the new initial position point by the system, continuously adding a bearing point, regenerating a laying section between the initial position point and the newly added bearing point, and recording the laying section into the optical cable route, so as to reciprocate.
c. Occupation:
and when the newly added bearing point is ready to exist, the newly added bearing point can be occupied, the connectivity of the optical cable line is automatically analyzed between the initial position point and the occupied bearing point, if the laying section does not exist, the laying section is generated, and the corresponding laying section is recorded into the optical cable route.
d. Deleting points:
when the information input of the newly added bearing point is wrong, a maintainer can delete the bearing point, simultaneously release the laying section correspondingly occupied, and also delete a peripheral bearing point not occupied by the optical cable, if the peripheral bearing point is not occupied by the laying section, the peripheral bearing point can be directly deleted, if the peripheral bearing point is occupied by the laying section and the laying section is not occupied by any optical cable, the associated laying section is deleted, and the checking and maintenance of the peripheral line data can be realized through the point deletion operation.
e. Splitting:
when a newly added bearing point is positioned in a laying section in the optical cable route, inserting the bearing point into the laying section, and simultaneously splitting the line laying section and the optical cable route laying section and synchronizing the line laying section and the optical cable route laying section into the record of the optical cable route;
f. and (3) confirmation:
when the attributes of the optical cable routing bearing points need to be edited, one optical cable routing bearing point can be selected for confirmation operation, the attributes of the bearing points can be edited, and the positions of the bearing points gps can be automatically calibrated by using the current gps coordinates.
S3, an acquisition unit:
positioning information collection can be carried out on the newly added and confirmed bearing points by operating the GPS positioning module combined with the acquisition unit through S2 to obtain GPS coordinate information of the bearing points, and the picture of the geographical environment can be obtained by combining the high-definition shooting module of the acquisition unit through an S2 operation method.
S4, storage unit and abnormality analysis method:
the load bearing can generate or update load bearing point data by collecting information in S3 and combining with load bearing point information entry, and generates laying section data between the starting position point and the latest load bearing point, and the load bearing point and the laying section data generated by the S3 data processing unit are independent data objects through the storage unit, and simultaneously records occupied laying sections in the optical cable route, and the system automatically analyzes abnormal data in software operation: point selection operations must be directed to the cable route bearer point; dotting operation is performed on the newly added bearing points; the occupation operation aims at the bearing points or end points around the fingers; the middle point of the optical cable cannot be occupied; the deletion operation may be directed to the optical cable route bearing point and the peripheral bearing point; the splitting operation can only be directed to the cable routing runs.
The optical cable line route census operation method is based on a system comprising a route display unit, wherein the output end of the route display unit is connected with a software operation unit, the output end of the software operation unit is connected with an acquisition unit, the output end of the acquisition unit is connected with a data processing unit, the output end of the data processing unit is connected with a storage and anomaly analysis unit, and the output end of the storage and anomaly analysis unit is connected with the route display unit.
As a further scheme of the invention: the acquisition unit is including location and shooting, shoot and adopt high definition to shoot, can gather geographical environment's picture and appearance, the location can carry out the location of geographical position to each newly-increased bearing point of optical cable line route.
As a further scheme of the invention: the data processing unit comprises point selection, point printing, occupation, deletion, splitting and confirmation.
As a further scheme of the invention: the data storage and anomaly analysis unit can automatically generate or update the data information of the bearing points in real time, and feeds the data information back to the route display unit in real time for display, so that maintenance personnel can check and know the data information.
An optical cable line route census operation method comprises the following processes: the optical cable can be selected through the route display unit to display and check the optical cable line route, then the point selection, the point printing, the occupation, the confirmation, the point deletion and the splitting are carried out through the software operation unit to carry out general survey maintenance on the optical cable line route, then the line route position is positioned through the acquisition unit, the photographing is carried out to obtain the environmental appearance, and finally the abnormal state point can be analyzed and processed through the data storage and the abnormal analysis unit.
The invention has the beneficial effects that:
the invention dynamically presents the optical cable line route around the environment where the maintainer is located by combining the satellite map with the GPS coordinate, and the maintenance personnel match and compare the system routing information with the field optical cable line by adopting the modes of point selection, point dotting, occupation, point deletion, splitting, confirmation and acquisition through the mobile terminal, thereby effectively and quickly realizing the general investigation of the newly-accessed optical cable line routing, and can quickly realize the checking of the stock optical cable line route, effectively improve the normalization and the accuracy of the optical cable line route data, further, redundant data caused by general survey can be avoided, and the invention can directly realize the general survey and the calibration of the optical cable line route at one time for the multi-point trend of the optical cable line route through the mobile terminal, therefore, the characteristics of simplicity, intuition, convenience and high efficiency of the operation process of optical cable routing general survey are achieved.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in the figure, the invention provides an optical cable line route census operation method, which comprises the following steps:
s1, selecting optical cable and route display unit:
and selecting the optical cable to be generally checked, displaying the existing route of the optical cable through a satellite map, dynamically displaying the peripheral line of the position of the maintainer by combining a GPS, and displaying the start point and the middle opening point of the optical cable by the newly-accessed optical cable.
S2, data processing unit software operation method:
a. selecting points:
the starting location point is determined by the point selection operation and maintenance personnel based on the division of responsibilities, and the location is a bearing point contained in the cable route on the map.
b. Dotting:
and clicking and dotting by maintenance personnel at the line bearing point and the position, popping up a page of the newly added bearing point, automatically acquiring a gps coordinate, submitting the page to the newly added bearing point, establishing a laying section between the initial position point and the newly added bearing point, recording the laying section into the optical cable route, updating the newly added point into the new initial position point by the system, continuously adding a bearing point, regenerating a laying section between the initial position point and the newly added bearing point, and recording the laying section into the optical cable route, so as to reciprocate.
c. Occupation:
and when the newly added bearing point is ready to exist, the newly added bearing point can be occupied, the connectivity of the optical cable line is automatically analyzed between the initial position point and the occupied bearing point, if the laying section does not exist, the laying section is generated, and the corresponding laying section is recorded into the optical cable route.
d. Deleting points:
when the information input of the newly added bearing point is wrong, a maintainer can delete the bearing point, simultaneously release the laying section correspondingly occupied, and also delete a peripheral bearing point not occupied by the optical cable, if the peripheral bearing point is not occupied by the laying section, the peripheral bearing point can be directly deleted, if the peripheral bearing point is occupied by the laying section and the laying section is not occupied by any optical cable, the associated laying section is deleted, and the checking and maintenance of the peripheral line data can be realized through the point deletion operation.
e. Splitting:
when a newly added bearing point is positioned in a laying section in the optical cable route, inserting the bearing point into the laying section, and simultaneously splitting the line laying section and the optical cable route laying section and synchronizing the line laying section and the optical cable route laying section into the record of the optical cable route;
f. and (3) confirmation:
when the attributes of the optical cable routing bearing points need to be edited, one optical cable routing bearing point can be selected for confirmation operation, the attributes of the bearing points can be edited, and the positions of the bearing points gps can be automatically calibrated by using the current gps coordinates.
S3, an acquisition unit:
positioning information collection can be carried out on the newly added and confirmed bearing points by operating the GPS positioning module combined with the acquisition unit through S2 to obtain GPS coordinate information of the bearing points, and the picture of the geographical environment can be obtained by combining the high-definition shooting module of the acquisition unit through an S2 operation method.
S4, storage unit and abnormality analysis method:
the load bearing can generate or update load bearing point data by collecting information in S3 and combining with load bearing point information entry, and generates laying section data between the starting position point and the latest load bearing point, and the load bearing point and the laying section data generated by the S3 data processing unit are independent data objects through the storage unit, and simultaneously records occupied laying sections in the optical cable route, and the system automatically analyzes abnormal data in software operation: point selection operations must be directed to the cable route bearer point; dotting operation is performed on the newly added bearing points; the occupation operation aims at the bearing points or end points around the fingers; the middle point of the optical cable cannot be occupied; the deletion operation may be directed to the optical cable route bearing point and the peripheral bearing point; the splitting operation can only be directed to the cable routing runs.
The optical cable line route general survey operation method is based on the following system and comprises a route display unit, wherein the output end of the route display unit is connected with a software operation unit, the output end of the software operation unit is connected with an acquisition unit, the output end of the acquisition unit is connected with a data processing unit, the output end of the data processing unit is connected with a storage and anomaly analysis unit, and the output end of the storage and anomaly analysis unit is connected with the route display unit.
The acquisition unit adopts high definition shooting including location and shooting, can gather geographical environment's picture and appearance, and the location can carry out the location of geographical position to each newly-increased bearing point of optical cable line route.
The data processing unit comprises point selection, point dotting, occupation, deletion, splitting and confirmation.
The data storage and anomaly analysis unit can automatically generate or update the data information of the bearing points in real time and feed the data information back to the route display unit in real time for display, so that maintenance personnel can check and know the data information.
An optical cable line route census operation method comprises the following processes: the optical cable can be selected to display and check the optical cable line route through the route display unit, then the point selection, the point printing, the occupation, the confirmation, the point deletion and the splitting are carried out through the software operation unit, the optical cable line route can be generally checked and maintained, then the line route position is positioned through the acquisition unit, the environmental appearance is obtained through photographing, and finally the abnormal state point can be analyzed and processed through the data storage and the abnormal analysis unit.
The points to be finally explained are: although the present invention has been described in detail with reference to the general description and the specific embodiments, on the basis of the present invention, the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. An optical cable line route census operation method is characterized by comprising the following steps:
s1, selecting optical cable and route display unit:
selecting an optical cable to be generally checked, displaying the existing route of the optical cable through a satellite map, dynamically displaying peripheral circuits of the positions of maintainers in combination with a GPS, and displaying the start point and the middle opening point of the optical cable through a newly-accessed optical cable;
s2, data processing unit software operation method:
a. selecting points:
determining a starting position point according to responsibility division by a point selection operation maintenance worker, wherein the position is a bearing point contained in the optical cable route on a map;
b. dotting:
the maintenance personnel click and click at the line bearing point and the position, a newly added bearing point page is popped, the gps coordinate is automatically obtained, the newly added bearing point is submitted, a laying section is established between the initial position point and the newly added bearing point and is recorded in the optical cable route, the system updates the newly added point to the new initial position point, then a bearing point is continuously added, a laying section is regenerated between the initial position point and the newly added bearing point and is recorded in the optical cable route, and the process is repeated;
c. occupation:
when the newly added bearing points are ready to exist, the newly added bearing points can be occupied, the connectivity of the optical cable line is automatically analyzed between the initial position point and the occupied bearing points, if the laying section does not exist, the laying section is generated, and the corresponding laying section is recorded into the optical cable route;
d. deleting points:
when the information input of the newly added bearing point is wrong, a maintainer can delete the bearing point, simultaneously release the laying section correspondingly occupied and delete a peripheral bearing point not occupied by the optical cable, if the peripheral bearing point is not occupied by the laying section, the peripheral bearing point can be directly deleted, if the peripheral bearing point is occupied by the laying section and the laying section is not occupied by any optical cable, the associated laying section is deleted, and the checking and maintenance of the peripheral line data can be realized through point deletion operation;
e. splitting:
when a newly added bearing point is positioned in a laying section in the optical cable route, inserting the bearing point into the laying section, and simultaneously splitting the line laying section and the optical cable route laying section and synchronizing the line laying section and the optical cable route laying section into the record of the optical cable route;
f. and (3) confirmation:
when the attributes of the optical cable routing bearing points need to be edited, one optical cable routing bearing point can be selected for confirmation operation, the attributes of the bearing points can be edited, and the positions of the bearing points gps are automatically calibrated by using the current gps coordinates;
s3, an acquisition unit:
positioning information acquisition can be carried out on the newly added and confirmed bearing points by operating the GPS positioning module combined with the acquisition unit through S2 to obtain GPS coordinate information of the bearing points, and the image of the geographical environment can be acquired by combining the high-definition shooting module of the acquisition unit through an S2 operation method;
s4, storage unit and abnormality analysis method:
the load bearing can generate or update load bearing point data by collecting information in S3 and combining with load bearing point information entry, and generates laying section data between the starting position point and the latest load bearing point, and the load bearing point and the laying section data generated by the S3 data processing unit are independent data objects through the storage unit, and simultaneously records occupied laying sections in the optical cable route, and the system automatically analyzes abnormal data in software operation: point selection operations must be directed to the cable route bearer point; dotting operation is performed on the newly added bearing points; the occupation operation aims at the bearing points or end points around the fingers; the middle point of the optical cable cannot be occupied; the deletion operation may be directed to the optical cable route bearing point and the peripheral bearing point; the splitting operation can only be directed to the cable routing runs.
2. The cable line routing screening operation method according to claim 1, based on the following system, wherein: including route display element, the software operation unit is connected to route display element output, the acquisition unit is connected to software operation unit output, the data processing unit is connected to the output of acquisition unit, storage and anomaly analysis unit are connected to data processing unit's output, route display element is connected with anomaly analysis unit's output to storage.
3. The method of claim 2, wherein the method further comprises: the acquisition unit is including location and shooting, shoot and adopt high definition to shoot, can gather geographical environment's picture and appearance, the location can carry out the location of geographical position to each newly-increased bearing point of optical cable line route.
4. The method of claim 2, wherein the method further comprises: the data processing unit comprises point selection, point printing, occupation, deletion, splitting and confirmation.
5. The method of claim 2, wherein the method further comprises: the data storage and anomaly analysis unit can automatically generate or update the data information of the bearing points in real time, and feeds the data information back to the route display unit in real time for display, so that maintenance personnel can check and know the data information.
6. The method for the cable line routing screening operation according to claim 1 or 2, comprising the steps of: the optical cable can be selected through the route display unit to display and check the optical cable line route, then the point selection, the point printing, the occupation, the confirmation, the point deletion and the splitting are carried out through the software operation unit to carry out general survey maintenance on the optical cable line route, then the line route position is positioned through the acquisition unit, the photographing is carried out to obtain the environmental appearance, and finally the abnormal state point can be analyzed and processed through the data storage and the abnormal analysis unit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110287167.0A CN113064915A (en) | 2021-03-17 | 2021-03-17 | Optical cable line route census operation method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110287167.0A CN113064915A (en) | 2021-03-17 | 2021-03-17 | Optical cable line route census operation method |
Publications (1)
Publication Number | Publication Date |
---|---|
CN113064915A true CN113064915A (en) | 2021-07-02 |
Family
ID=76561049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202110287167.0A Withdrawn CN113064915A (en) | 2021-03-17 | 2021-03-17 | Optical cable line route census operation method |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN113064915A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114584208A (en) * | 2022-04-28 | 2022-06-03 | 高勘(广州)技术有限公司 | Method, device and equipment for checking optical cable facility points and storage medium |
CN116502783A (en) * | 2023-06-27 | 2023-07-28 | 国网浙江省电力有限公司湖州供电公司 | GIS-based ADSS optical cable operation and maintenance line planning method and device |
-
2021
- 2021-03-17 CN CN202110287167.0A patent/CN113064915A/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114584208A (en) * | 2022-04-28 | 2022-06-03 | 高勘(广州)技术有限公司 | Method, device and equipment for checking optical cable facility points and storage medium |
CN114584208B (en) * | 2022-04-28 | 2022-07-05 | 高勘(广州)技术有限公司 | Method, device and equipment for checking optical cable facility points and storage medium |
CN116502783A (en) * | 2023-06-27 | 2023-07-28 | 国网浙江省电力有限公司湖州供电公司 | GIS-based ADSS optical cable operation and maintenance line planning method and device |
CN116502783B (en) * | 2023-06-27 | 2023-09-08 | 国网浙江省电力有限公司湖州供电公司 | GIS-based ADSS optical cable operation and maintenance line planning method and device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR102657309B1 (en) | Method for mounting an electrical switching system and assembly support device for simplifying assembly of such switching system | |
CN113064915A (en) | Optical cable line route census operation method | |
US20150169288A1 (en) | System operation tracing method on distributed system | |
CN108508477B (en) | Seismic data acquisition system and method | |
CN110751454A (en) | Cable accessory installation process control system and method | |
CN107342880B (en) | Abnormal information acquisition method and system | |
CN117575488A (en) | Production formula management method, system and device | |
JP2003274576A (en) | Power system monitoring controller | |
CN115577160A (en) | Production line data acquisition method, device, equipment and medium | |
CN115795118A (en) | Information cooperative processing method and device for multi-source heterogeneous data | |
CN114650211A (en) | Fault repairing method, device, electronic equipment and computer readable storage medium | |
US11632266B2 (en) | Device setting control device, network system, device setting method, and program | |
CN112579352A (en) | Quality monitoring result generation method, storage medium and quality monitoring system of service data processing link | |
CN113254530A (en) | Mobile terminal off-line processing method, system, electronic equipment and storage medium | |
CN113656210A (en) | Processing method and device for error reporting information, server and readable storage medium | |
CN108388501B (en) | Intersystem integration test method | |
CN114661513B (en) | Distributed multi-source data acquisition method, system, equipment and storage medium | |
CN111767299A (en) | Database operation method, device and system, storage medium and electronic equipment | |
CN115827678B (en) | Method, device, medium and electronic equipment for acquiring service data | |
CN113505552B (en) | Method and device for dividing circuit drawing modules of signalers interlocked in station | |
CN113050925B (en) | Block chain intelligent contract repairing method and device | |
CN108494859B (en) | Network data synchronization method and system | |
CN115134213B (en) | Disaster recovery method, device, equipment and storage medium | |
CN115640328A (en) | Offline verification survey method and system | |
CN115242761A (en) | Dynamic OpenAPI automatic registration method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210702 |
|
WW01 | Invention patent application withdrawn after publication |