CN208938287U - Anti-theft device for transformer and system - Google Patents
Anti-theft device for transformer and system Download PDFInfo
- Publication number
- CN208938287U CN208938287U CN201821647370.4U CN201821647370U CN208938287U CN 208938287 U CN208938287 U CN 208938287U CN 201821647370 U CN201821647370 U CN 201821647370U CN 208938287 U CN208938287 U CN 208938287U
- Authority
- CN
- China
- Prior art keywords
- transformer
- theft device
- module
- main control
- control module
- 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.)
- Active
Links
Landscapes
- Burglar Alarm Systems (AREA)
Abstract
The utility model provides a kind of anti-theft device for transformer and system, is related to the technical field of transformer anti-theft, comprising: chassis body and the transformer safety state detection module, main control module and the alarm module that are arranged in cabinet；The transformer safety state detection module is electrically connected with the main control module, and for the transformer safety state detection module when detecting that the transformer is in non-secure states, Xiang Suoshu main control module exports notification signal；The main control module is electrically connected with the alarm module, and the main control module controls the alarm module when receiving the notification signal and starts to alarm, and alleviates the serious problem of transformer steal phenomenon.
Description
Technical field
The utility model relates to transformer anti-theft technical fields, more particularly, to a kind of anti-theft device for transformer and system.
Background technique
Currently, transformer is widely used in the electricity transmission process of electric power, telecommunications, broadcasting and TV, petroleum and agricultural irrigation, due to big
Part transmission system many places are in wilderness field and copper valence rises steadily, and cause transformer to be stolen phenomenon extremely serious, though through public security
The severe strike of department is that shoe taboo is more than and annual in rising trend, to cause the power failure of large area, influences the day of the people
It often lives and what is produced is normally carried out, bring massive losses to people's property.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of anti-theft device for transformer and system, to alleviate transformation
Device is stolen the serious problem of phenomenon.
In a first aspect, the utility model embodiment provides a kind of anti-theft device for transformer, comprising: chassis body and setting
Transformer safety state detection module, main control module and alarm module in cabinet；
The transformer safety state detection module is electrically connected with the main control module, the transformer safety state-detection
For module when detecting that the transformer is in non-secure states, Xiang Suoshu main control module exports notification signal；
The main control module is electrically connected with the alarm module, and the main control module is receiving the notification signal time control
The alarm module is made to start to alarm.
With reference to first aspect, the utility model embodiment provides the first possible embodiment of first aspect,
In, the transformer safety state detection module includes: ac signal acquisition unit；
The ac signal acquisition unit acquires whether the transformer normally exports AC signal, stops in the transformer
When only exporting AC signal, Xiang Suoshu main control module exports alert notice signal.
With reference to first aspect, the utility model embodiment provides second of possible embodiment of first aspect,
In, the transformer safety state detection module includes: security alarm line, and the security alarm line is filled by the transformer anti-theft
Extraction is set, the access anti-theft device for transformer after being looped around on the transformer；
When the alarming line is illegally cut, Xiang Suoshu main control module exports alert notice signal.
With reference to first aspect, the utility model embodiment provides the third possible embodiment of first aspect,
In, the transformer safety state detection module includes: that the door sensor being set on the machine box door of the anti-theft device for transformer is opened
It closes, when for detecting that the machine box door of the anti-theft device for transformer is turned on, Xiang Suoshu main control module exports alert notice letter
Number.
With reference to first aspect, the utility model embodiment provides the 4th kind of possible embodiment of first aspect,
In, the anti-theft device for transformer further include: communication module；
The main control module is after the alert notice signal for receiving the transformer safety state detection module output, institute
It states main control module and alert notice is outwardly sent by the communication module.
With reference to first aspect, the utility model embodiment provides the 5th kind of possible embodiment of first aspect,
In, the alarm module includes: combined aural and visual alarm, and the combined aural and visual alarm is connected to the main control module, the sound-light alarm
Device issues sound-light alarm after receiving the main control module alarm command.
With reference to first aspect, the utility model embodiment provides the 6th kind of possible embodiment of first aspect,
In, the anti-theft device for transformer further include: power supply module；The power supply module is used to supply for the anti-theft device for transformer
Electricity.
With reference to first aspect, the utility model embodiment provides the 6th kind of possible embodiment of first aspect,
In, the power supply module includes Alternating Current Power Supply unit and energy-storage units；The Alternating Current Power Supply unit is used for the alternating current that will be accessed
It carries out after voltage is converted as anti-theft device for transformer power supply；The energy-storage units are used to be described when not accessing alternating current
Anti-theft device for transformer power supply, the energy-storage units include solar panel and energy-storage battery；The solar panel with
The energy-storage battery connection.
With reference to first aspect, the utility model embodiment provides the 7th kind of possible embodiment of first aspect,
In, the anti-theft device for transformer further includes power management module, and the power management module is the transformer safety state
Detection module, the main control module and the alarm module provide each module corresponding operating voltage.
Second aspect, the utility model embodiment also provide a kind of transformer anti-theft system, comprising: server and first
Anti-theft device for transformer described in aspect any embodiment；
Multiple anti-theft device for transformer are connected in parallel；
Multiple anti-theft device for transformer are by being connected to the network the server；
The server receives the alert notice that multiple anti-theft device for transformer are sent, and shows stolen transformer letter
Breath.
The utility model embodiment brings following the utility model has the advantages that the utility model embodiment is by enabling transformer safety shape
For state detection module when detecting that the transformer is in non-secure states, Xiang Suoshu main control module exports notification signal；Enable master
Control module is electrically connected with alarm module, and the main control module can control the alarm module when receiving the notification signal
Start to alarm, alarm can be issued when transformer has stolen risk, finds transformer in time convenient for relevant staff
There is currently stolen risk, and then alleviate the serious problem of transformer steal phenomenon.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of anti-theft device for transformer structure chart provided by the embodiment of the utility model；
Fig. 2 is a kind of anti-theft device for transformer scheme of installation provided by the embodiment of the utility model；
Fig. 3 is another anti-theft device for transformer structure chart provided by the embodiment of the utility model；
Fig. 4 is a kind of transformer anti-theft system structure chart provided by the embodiment of the utility model.
Specific embodiment
To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below in conjunction with attached drawing to this
The technical solution of utility model is clearly and completely described, it is clear that described embodiment is that the utility model a part is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained, fall within the protection scope of the utility model under the premise of creative work.
Currently, transformer is widely used in the electricity transmission process of electric power, telecommunications, broadcasting and TV, petroleum and agricultural irrigation, due to big
Part transmission system many places are in wilderness field and copper valence rises steadily, and cause transformer to be stolen phenomenon extremely serious, though through public security
The severe strike of department is that shoe taboo is more than and annual in rising trend, to cause the power failure of large area, influences the day of the people
It often lives and what is produced is normally carried out, bring massive losses to people's property, be based on this, it is provided by the embodiment of the utility model
A kind of anti-theft device for transformer and system, can be by the way that transformer safety state detection module and the main control module to be electrically connected
It connects, the transformer safety state detection module is when detecting that the transformer is in non-secure states, Xiang Suoshu master control mould
Block exports notification signal；The main control module is electrically connected with the alarm module, and the main control module is receiving the notice
The alarm module is controlled when signal to start to alarm, and alleviates the serious problem of transformer steal phenomenon.
For convenient for understanding the present embodiment, first to a kind of transformer anti-theft disclosed in the utility model embodiment
Device describes in detail, as shown in Figure 1, the anti-theft device for transformer, comprising: chassis body 1 and is arranged in cabinet
Transformer safety state detection module 2, main control module 3 and alarm module 4；
The transformer safety state detection module is electrically connected with the main control module, the transformer safety state-detection
For module when detecting that the transformer is in non-secure states, Xiang Suoshu main control module exports notification signal；The master control mould
Block is electrically connected with the alarm module, and the main control module controls the alarm module when receiving the notification signal and starts
Alarm.
In the utility model embodiment, the transformer, which is in non-secure states, can refer to the position resolver state
It changes or the voltage device working condition changes or the machine box door of the anti-theft device for transformer is illegally beaten
It opens；The transformer safety state detection module passes through the real-time status for detecting coupled transformer, detecting
State position resolver state or when the total state of work changes or when machine box door is illegally opened, it is defeated to main control module in time
Alert notice signal out warns the transformer that may be tampered.
In the utility model embodiment, the alarm module may include combined aural and visual alarm, the combined aural and visual alarm with
The main control module connection, the combined aural and visual alarm issue sound-light alarm after receiving the main control module alarm command, can
To play the role of directly threatening robber at the scene.
In the utility model embodiment, the transformer safety state detection module may include: ac signal acquisition
Unit 13；The ac signal acquisition unit can acquire whether the transformer normally exports AC signal, in the transformation
When device stops output AC signal, Xiang Suoshu main control module exports alert notice signal.Illustratively, as shown in Fig. 2, the change
Depressor anti-theft device 201 may be mounted on the electric pole 10 on 9 side of transformer to be protected, the peace of the anti-theft device for transformer
Dress height can be higher than the transformer；The quad drawn from the outside lead connecting hole 8 of the anti-theft device for transformer
Different colors is respectively set in line, four cables, illustratively, can be set to yellow, green, red and black, passes through
The utility model embodiment can distinguish different cables according to different colors, prevent field personnel from connecing
Line mistake；Illustratively, yellow cable line can be installed to be connected with transformer A phase output terminal, green cable and transformer B phase
Output end is connected, and red cable line is connected with transformer C phase cable line output terminal, the zero line output of balck cable line and transformer
End is connected.As soon as when steal molecule cut any of them cable when, the transformer anti-theft device for transformer Marko with
It detects and is powered off in the Three-Phase Transformer electricity, anti-theft device for transformer can be immediately controlled the alarm module and carry out scene
Alarm.Illustratively, while alarm, the anti-theft device for transformer, which can also be arranged, sends warning message by GSM card
Mode sends transformer pilferage warning message on responsible service personnel's mobile phone, and service personnel is notified to be on the scene in time.
In another embodiment of the utility model, as shown in Fig. 2, the transformer safety state detection module further includes peace
Full alarming line 11, the security alarm line can refer to is drawn by the outside lead connecting hole 8 of the anti-theft device for transformer 201,
The access anti-theft device for transformer after being looped around on the transformer 9；When the security alarm line is illegally cut, to institute
State main control module output alert notice signal.In the utility model embodiment, the security alarm line passes through the transformer
Cooling fin be wrapped on the transformer, can not be connected transformer, anti-theft device for transformer and by mobile electric pole
It picks up and, steal the desired phase shifting transformer of molecule and just have to cut the security alarm line, once the security alarm line quilt
Cut, the main control module can detect the security alarm line electric current in the loop change, according to described
Curent change in security alarm line loop judges that the transformer is likely to be at unsafe condition, the main control module control
The alarm module carries out onsite alarming.
In the another embodiment of the utility model, the transformer safety state detection module can also include: setting
In the door status switch 14 on the machine box door of the anti-theft device for transformer, for detecting the cabinet of the anti-theft device for transformer
When door is turned on, Xiang Suoshu main control module exports alert notice signal.In the utility model embodiment, for differentiating transformer
The machine box door of anti-theft device is that artificial normal opening or stealer are illegally opened, and can choose the door sensor with distant control function and opens
Close, Repair of Transformer personnel or other have permission open the personnel of the machine box door can be equipped with the remote control of the door status switch
The warning function of the door status switch is closed by remote-control key before opening the machine box door, cancels the door by key
The safety protection function of magnetic switch；Illustratively, the door status switch for not having distant control function is usually when installation by the door
The switch of magnetic switch warning function hides installation, is not easy the person's of being tampered discovery, if service personnel or other have permission generation and open institute
The report of the door status switch can be turned off manually after opening machine box door in the personnel for stating machine box door before door status switch alarm
Alert switch, by the utility model embodiment, primarily to reducing rate of false alarm.
In another embodiment of the utility model, as shown in figure 3, the anti-theft device for transformer can also include communication mould
Block 5；The main control module is after the alert notice signal for receiving the transformer safety state detection module output, the master
It controls module and alert notice is outwardly sent by the communication module.
In another embodiment of the utility model, the anti-theft device for transformer as shown in Figure 3 can also include: power supply mould
Block 6；The power supply module is used to power for the anti-theft device for transformer.The power supply module includes 61 He of Alternating Current Power Supply unit
Energy-storage units；The Alternating Current Power Supply unit is used to carry out the alternating current of access after voltage is converted as the anti-theft device for transformer
Power supply；The energy-storage units are used to power when not accessing alternating current for the anti-theft device for transformer, the energy-storage units packet
Include solar panel 63 and energy-storage battery 62；The solar panel is connect with the energy-storage battery.
In another embodiment of the utility model, as shown in figure 3, the anti-theft device for transformer can also include power supply pipe
Module 15 is managed, the power management module can mention for the signal acquisition module, the main control module and the alarm module
For the corresponding operating voltage of each module, meets the needs of disparate modules need different operating voltage.
In another embodiment of the utility model, as shown in figure 3, the anti-theft device for transformer can also include expansible
Interface module 7, illustratively, extensive interface module may include the road 1-6 extensive interface；Illustratively, the transformer
Anti-theft device can increase alarm module of taking pictures on extensive interface according to the needs of use, and the anti-theft device for transformer is being examined
When measuring the transformer and being in unsafe condition, alarm module of taking pictures described in the main control module control claps scene
According to, and server is sent to by the communication module.The photo for taking pictures alarm module shooting can be to crack transformer
It steals case and more more direct evidences is provided.Illustratively, extensive interface module can also be added for detecting the change
The displacement sensor of position pressure applicator information.By the utility model embodiment, the anti-theft device for transformer can satisfy in original
Increase new functional requirement on the basis of functional.
The utility model embodiment also provides a kind of transformer anti-theft system, as shown in figure 4, the transformer anti-theft system
It may include: server 203 and a kind of anti-theft device for transformer as described in relation to the first aspect；In the utility model embodiment,
Multiple anti-theft device for transformer 201 can be connected in parallel；Then respectively by network via interchanger 202 and the service
Device connection, the server can receive the alert notice that multiple anti-theft device for transformer are sent, and the alert notice can
To include the contents such as transformer number, installation site；The server can also show stolen transformation according to the alert notice
Device information.Illustratively, transformer location distribution figure can also be arranged in the server, and the server is according to the report
Alert notice shows stolen transformer geographical location information on the transformer location distribution figure.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
It with the specific work process of device, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In addition, in the description of the utility model embodiment unless specifically defined or limited otherwise, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer readable storage medium.Based on this understanding, the technical solution of the utility model substantially or
Person says that the part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products,
The computer software product is stored in a storage medium, including some instructions are used so that computer equipment (can be with
Personal computer, server or the network equipment etc.) execute each embodiment the method for the utility model whole or portion
Step by step.And storage medium above-mentioned include: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), with
Machine accesses various Jie that can store program code such as memory (RAM, Random Access Memory), magnetic or disk
Matter.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
Finally, it should be noted that embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical solution of utility model, rather than its limitations, the protection scope of the utility model is not limited thereto, although referring to aforementioned
The utility model is described in detail in embodiment, those skilled in the art should understand that: it is any to be familiar with this skill
The technical staff in art field within the technical scope disclosed by the utility model, still can be to skill documented by previous embodiment
Art scheme modify or can readily occur in variation or equivalent replacement of some of the technical features；And these modifications,
Variation or replacement, the spirit and model of the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution
It encloses, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model is answered described is wanted with right
Subject to the protection scope asked.
Claims (10)
1. a kind of anti-theft device for transformer characterized by comprising chassis body and the transformer safety shape being arranged in cabinet
State detection module, main control module and alarm module；
The transformer safety state detection module is electrically connected with the main control module, the transformer safety state detection module
When detecting that transformer is in non-secure states, Xiang Suoshu main control module exports notification signal；
The main control module is electrically connected with the alarm module, and the main control module controls institute when receiving the notification signal
Alarm module is stated to start to alarm.
2. anti-theft device for transformer according to claim 1, which is characterized in that the transformer safety state detection module
It include: ac signal acquisition unit；
The ac signal acquisition unit acquires whether the transformer normally exports AC signal, stops in the transformer defeated
Out when AC signal, Xiang Suoshu main control module exports alert notice signal.
3. anti-theft device for transformer according to claim 1, which is characterized in that the transformer safety state detection module
It include: security alarm line, the security alarm line is drawn by the anti-theft device for transformer, is looped around on the transformer and is followed by
Enter the anti-theft device for transformer；
When the alarming line is illegally cut, Xiang Suoshu main control module exports alert notice signal.
4. anti-theft device for transformer according to claim 1, which is characterized in that the transformer safety state detection module
It include: the door status switch being set on the machine box door of the anti-theft device for transformer, for detecting the transformer anti-theft dress
When the machine box door set is turned on, Xiang Suoshu main control module exports alert notice signal.
5. anti-theft device for transformer according to claim 1, which is characterized in that the anti-theft device for transformer further include:
Communication module；
The main control module is after the alert notice signal for receiving the transformer safety state detection module output, the master
It controls module and alert notice is outwardly sent by the communication module.
6. anti-theft device for transformer according to claim 1, which is characterized in that the alarm module includes: sound-light alarm
Device, the combined aural and visual alarm are connected to the main control module, and the combined aural and visual alarm refers to receiving main control module alarm
Sound-light alarm is issued after order.
7. anti-theft device for transformer according to claim 1, which is characterized in that the anti-theft device for transformer further include:
Power supply module；The power supply module is used to power for the anti-theft device for transformer.
8. anti-theft device for transformer according to claim 7, which is characterized in that the power supply module includes Alternating Current Power Supply list
Member and energy-storage units；The Alternating Current Power Supply unit is used to carry out the alternating current of access after voltage is converted as the transformer anti-theft
Device power supply；The energy-storage units are used to power when not accessing alternating current for the anti-theft device for transformer, the energy storage list
Member includes solar panel and energy-storage battery；The solar panel is connect with the energy-storage battery.
9. anti-theft device for transformer according to claim 1, which is characterized in that the anti-theft device for transformer further includes electricity
Source control module, the power management module are the transformer safety state detection module, the main control module and the report
Alert module provides each module corresponding operating voltage.
10. a kind of transformer anti-theft system characterized by comprising server and change as described in any one of claim 1 to 9
Depressor anti-theft device；
Multiple anti-theft device for transformer are connected in parallel；
Multiple anti-theft device for transformer are by being connected to the network the server；
The server receives the alert notice that multiple anti-theft device for transformer are sent, and shows stolen transformer information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821647370.4U CN208938287U (en) | 2018-10-10 | 2018-10-10 | Anti-theft device for transformer and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821647370.4U CN208938287U (en) | 2018-10-10 | 2018-10-10 | Anti-theft device for transformer and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208938287U true CN208938287U (en) | 2019-06-04 |
Family
ID=66724098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821647370.4U Active CN208938287U (en) | 2018-10-10 | 2018-10-10 | Anti-theft device for transformer and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208938287U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111080943A (en) * | 2020-01-13 | 2020-04-28 | 国网河北省电力有限公司沧州供电分公司 | Transformer anti-theft system under ubiquitous internet |
-
2018
- 2018-10-10 CN CN201821647370.4U patent/CN208938287U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111080943A (en) * | 2020-01-13 | 2020-04-28 | 国网河北省电力有限公司沧州供电分公司 | Transformer anti-theft system under ubiquitous internet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105261132B (en) | Intelligent transformer burglary-resisting system | |
| CN203616367U (en) | An anti-electricity-stealing metering cabinet | |
| CN103366479B (en) | The tamper-proof theft protection long-distance monitorng device of transformer | |
| CN210379921U (en) | Electricity meter box capable of preventing electricity theft | |
| CN204270435U (en) | A kind of cable well lid real time monitoring apparatus of intelligent alarm localization of fault | |
| CN102916465A (en) | Embedded multifunctional charging device for monitoring multimedia messages in real time | |
| CN104361701A (en) | Anti-theft device of transformer | |
| CN208938287U (en) | Anti-theft device for transformer and system | |
| CN106351260A (en) | Intelligent cable pit cover plate | |
| CN204178486U (en) | A kind of power cable anti-theft device | |
| CN204407714U (en) | A kind of switch cubicle with monitoring function | |
| CN108365656A (en) | A kind of automobile charging pile security protection system | |
| CN207160081U (en) | A kind of well lid alarm, burglary-resisting system | |
| CN205486577U (en) | Power facilities anti -theft device | |
| CN107067601A (en) | A kind of electric power alarm | |
| CN218850459U (en) | Transformer substation protection hard pressing plate state monitoring device | |
| CN207302262U (en) | A kind of anti-theft device for transformer | |
| CN206773857U (en) | Ultra-high-tension power transmission line warning hinders system surely | |
| CN105974865A (en) | Intelligent irrigation control system | |
| CN107863691A (en) | Power distribution cabinet intelligent electricity anti-theft Force system | |
| CN110979066B (en) | Safe theftproof that new energy automobile used fills electric pile | |
| CN208209255U (en) | Box-type substation | |
| CN203338501U (en) | Anti-theft alarm device | |
| CN111307219A (en) | Grounding circulation on-line monitoring system with active anti-theft and high-speed wireless transmission | |
| CN202512680U (en) | Breakage-proof and anti-theft long-distance monitoring device for transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |