CN109973729A - A kind of compressed natural gas steam line - Google Patents
A kind of compressed natural gas steam line Download PDFInfo
- Publication number
- CN109973729A CN109973729A CN201910287092.9A CN201910287092A CN109973729A CN 109973729 A CN109973729 A CN 109973729A CN 201910287092 A CN201910287092 A CN 201910287092A CN 109973729 A CN109973729 A CN 109973729A
- Authority
- CN
- China
- Prior art keywords
- ring
- wall
- natural gas
- fixedly installed
- cyclization
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
- F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
The present invention relates to natural gas line technical fields, and disclose a kind of compressed natural gas steam line, including connection valve, conduction pipe, valve body, connecting pipe, fixed ring, sealing ring, with cyclization, mounting ring, locating slot, draw runner, stop collar, limited block, secondary spring and annulus, conduction pipe is fixedly installed at the top of the connection valve, valve body is fixedly installed at the top of the conduction pipe, the outer wall of the connecting pipe is fixedly installed with fixed ring, sealing ring is movably installed on the right side of the connection valve, the outer wall of the connection valve is fixedly installed with cyclization, the outer wall of the fixed ring is movably installed with the mounting ring being threadedly coupled with cyclization, the inside of the mounting ring offers locating slot.The compressed natural gas steam line changes the multiple bolts of tradition and ring flange and cooperates come into the drawbacks of connection, and is attached by matching cyclization and the single screw thread of mounting ring, improves efficiency when connecting to pipeline.
Description
Technical field
The present invention relates to natural gas line technical field, specially a kind of compressed natural gas steam line.
Background technique
Natural gas is contained in underground porous gap rock stratum, including casing-head gas, reservoir gas, coal bed gas, gas of mud volcano and biology
Gas etc. is generated, natural gas is mainly used for making fuel, can manufacture carbon black, chemicals and liquefied petroleum gas, and natural gas is more
One of the combustion gas of safety, it is free of carbon monoxide, also lighter than air, once a leak occurs, can diffuse up immediately, is not easy accumulation and is formed
Explosive gas, safety are relatively high compared with for other fuel gas.
Existing natural gas line convenient for connection on it is perfect not enough, existing natural gas supply pipeline with switch valve
Ring flange is mostly used to be attached when being attached, it is to be clamped by multiple bolts to pipeline that ring flange, which is attached,
Labor intensity of the operator in connection is increased, reduces efficiency when connection, and it is difficult to ensure that on each bolt
Dynamics guarantees unanimously, to be easy to cause pipeline connection to shift, pipeline junction is caused to leak, so propose a kind of compression
Natural gas supply pipeline solves the problems, such as above-mentioned propose.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of compressed natural gas steam line, has quickly connection etc.
Advantage, solve existing natural gas line convenient for connection on it is perfect not enough, existing natural gas supply pipeline with open
Closing when valve is attached mostly uses ring flange to be attached, and it is to be pressed from both sides by multiple bolts to pipeline that ring flange, which is attached,
Tightly, labor intensity of the operator in connection is increased, reduces efficiency when connection, and it is difficult to ensure that on each bolt
Dynamics guarantee consistent, the problem of being easy to cause pipeline connection to shift, pipeline junction is caused to leak.
(2) technical solution
To realize the above-mentioned purpose quickly connected, the invention provides the following technical scheme: a kind of compressed natural gas air supply pipe
Road, including connection valve, conduction pipe, valve body, connecting pipe, fixed ring, sealing ring, match cyclization, mounting ring, locating slot, draw runner, limit
Position ring, limited block, secondary spring and annulus are fixedly installed with conduction pipe, the top of the conduction pipe at the top of the connection valve
It is fixedly installed with valve body, the outer wall of the connecting pipe is fixedly installed with fixed ring, is movably installed on the right side of the connection valve
Sealing ring, the outer wall of the connection valve are fixedly installed with cyclization, and the outer wall of the fixed ring is movably installed with and matches cyclization spiral shell
The mounting ring of line connection, the inside of the mounting ring offer locating slot, and the outer wall of the fixed ring is fixedly installed with draw runner, institute
The outer wall for stating draw runner is slidably connected restraining position ring block, and the limit extended to inside locating slot is fixedly installed on the left of the stop collar
Block, the outer wall of the connecting pipe are fixedly installed with annulus, and the outer wall of the connecting pipe is movably installed with and the fixed company of annulus
The secondary spring connect is fixedly connected on the right side of the left side of the secondary spring and stop collar.
Preferably, the internal diameter on the right side of the mounting ring is less than the outer diameter of fixed ring, the outer wall and mounting ring with cyclization
Inside offer the bolt slot being mutually adapted.
Preferably, the quantity of the limited block is eight, and eight limited blocks are distributed on stop collar in a ring, institute
The quantity for stating locating slot is identical as the quantity of limited block.
Preferably, the thickness of the sealing ring is not less than one centimetre, and the outer diameter of the sealing ring is greater than the outer diameter of connection valve.
Preferably, the outer wall of the limited block is fillet setting, the outer diameter and the internal diameter phase of connection valve of the connecting pipe
Adaptation.
Preferably, the outer diameter of the annulus is greater than the internal diameter of secondary spring, and length of the draw runner in connecting pipe is big
In twice of limit ring thickness.
(3) beneficial effect
Compared with prior art, the present invention provides a kind of compressed natural gas steam line, have it is following the utility model has the advantages that
The compressed natural gas steam line, when needing for connection valve and connecting pipe to be attached, by mounting ring with
It is threadedly engaged with cyclization, so that mounting ring is stably connected with with cyclization, is driven in connecting pipe by mounting ring
Fixed ring extend into the inside of connection valve, while combining closely with sealing ring, to ensure that connection valve and connection
Pipeline stabilization connection, fixed ring is identical as sealing loop interface everywhere pressing force, changes the multiple bolts of tradition and ring flange
Cooperation comes into the drawbacks of connection, and by being attached with cyclization and the single screw thread of mounting ring, when improving to pipeline connection
Efficiency, and after the completion of connection, the secondary spring being arranged on the right side of connecting pipe pushes stop collar, and stop collar passes through
Draw runner limits the rotation of stop collar, passes through the cooperation of limited block and locating slot, it is therefore prevented that the rotation of mounting ring, to ensure that
Stability of mounting ring after the completion of connection.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is partial enlarged view at A in Fig. 1 of the present invention；
Fig. 3 is the sectional view of stop collar of the present invention；
Fig. 4 is stop collar left view of the present invention.
In figure: 1 connection valve, 2 conduction pipes, 3 valve bodies, 4 connecting pipes, 5 fixed rings, 6 sealing rings, 7 with cyclization, 8 mounting rings,
9 locating slots, 10 draw runners, 11 stop collars, 12 limited blocks, 13 secondary springs, 14 annulus.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1-4, a kind of compressed natural gas steam line, including connection valve 1, conduction pipe 2, valve body 3, connecting pipe
4, fixed ring 5, sealing ring 6, match cyclization 7, mounting ring 8, locating slot 9, draw runner 10, stop collar 11, limited block 12, secondary spring 13
With annulus 14, the top of connection valve 1 is fixedly installed with conduction pipe 2, and the top of conduction pipe 2 is fixedly installed with valve body 3, connecting pipe
4 outer wall is fixedly installed with fixed ring 5, and the right side of connection valve 1 is movably installed with sealing ring 6, and the thickness of sealing ring 6 is not less than one
Centimetre, the outer diameter of sealing ring 6 is greater than the outer diameter of connection valve 1, and the outer wall of connection valve 1 is fixedly installed with cyclization 7, fixed ring 5
Outer wall is movably installed with the mounting ring 8 being threadedly coupled with cyclization 7, and the internal diameter on 8 right side of mounting ring is less than the outer diameter of fixed ring 5,
The inside of outer wall and mounting ring 8 with cyclization 7 offers the bolt slot being mutually adapted, and the inside of mounting ring 8 offers locating slot
9, the outer wall of fixed ring 5 is fixedly installed with draw runner 10, and the outer wall of draw runner 10 is slidably connected restraining position ring block 11, the left side of stop collar 11
It is fixedly installed with the limited block 12 extended to inside locating slot 9, the quantity of limited block 12 is eight, and eight limited blocks 12 are in ring
Shape is distributed on stop collar 11, and the outer wall of limited block 12 is fillet setting, the outer diameter and the internal diameter phase of connection valve 1 of connecting pipe 4
Adaptation, the quantity of locating slot 9 is identical as the quantity of limited block 12, and the outer wall of connecting pipe 4 is fixedly installed with annulus 14, connecting tube
The outer wall in road 4 is movably installed with the secondary spring 13 being fixedly connected with annulus 14, left side and the stop collar 11 of secondary spring 13
Right side is fixedly connected, and the outer diameter of annulus 14 is greater than the internal diameter of secondary spring 13, and length of the draw runner 10 in connecting pipe 4 is greater than limit
Position twice of 11 thickness of ring, when needing for connection valve 1 and connecting pipe 4 to be attached, by mounting ring 8 with cyclization 7 into
Row is threadedly engaged, so that mounting ring 8 is stably connected with with cyclization 7, drives consolidating in connecting pipe 4 by mounting ring 8
Determine the inside that ring 5 extends into connection valve 1, while combining closely with sealing ring 6, to ensure that connection valve 1 and connection
Pipeline 4 is stably connected with, and fixed ring 5 is identical as 6 contact surface everywhere pressing force of sealing ring, changes the multiple bolts of tradition and flange
Disk cooperation to improve into the drawbacks of connection, and by being attached with cyclization 7 and the single screw thread of mounting ring 8 and connect pipeline
When efficiency, and after the completion of connection, the secondary spring 13 being arranged on the right side of connecting pipe 4 pushes stop collar 11, and
Stop collar 11 limits the rotation of stop collar 11 by draw runner 10, passes through the cooperation of limited block 12 and locating slot 9, it is therefore prevented that installation
The rotation of ring 8, to ensure that stability of the mounting ring 8 after the completion of connection.
In conclusion the compressed natural gas steam line leads to when needing for connection valve 1 and connecting pipe 4 to be attached
It crosses mounting ring 8 to be threadedly engaged with cyclization 7, so that mounting ring 8 is stably connected with with cyclization 7, passes through mounting ring 8
It drives the fixed ring 5 in connecting pipe 4 to extend into the inside of connection valve 1, while combining closely with sealing ring 6, thus
It ensure that connection valve 1 and connecting pipe 4 are stably connected with, fixed ring 5 is identical as 6 contact surface everywhere pressing force of sealing ring, changes
Traditional multiple bolts and ring flange cooperate come into the drawbacks of connection, and are connected by matching cyclization 7 and mounting ring 8 single screw thread
It connects, efficiency when improving to pipeline connection, and after the completion of connection, the secondary spring 13 being arranged on the right side of connecting pipe 4 is right
Stop collar 11 is pushed, and stop collar 11 limits the rotation of stop collar 11 by draw runner 10, passes through limited block 12 and positioning
The cooperation of slot 9, it is therefore prevented that the rotation of mounting ring 8, to ensure that stability of the mounting ring 8 after the completion of connection.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of compressed natural gas steam line, including connection valve (1), conduction pipe (2), valve body (3), connecting pipe (4), fixation
Ring (5), sealing ring (6), with cyclization (7), mounting ring (8), locating slot (9), draw runner (10), stop collar (11), limited block (12),
Secondary spring (13) and annulus (14), it is characterised in that: it is fixedly installed with conduction pipe (2) at the top of the connection valve (1), it is described
It is fixedly installed at the top of conduction pipe (2) valve body (3), the outer wall of the connecting pipe (4) is fixedly installed with fixed ring (5), institute
It states and is movably installed on the right side of connection valve (1) sealing ring (6), the outer wall of the connection valve (1) is fixedly installed with cyclization (7),
The outer wall of the fixed ring (5) is movably installed with the mounting ring (8) being threadedly coupled with cyclization (7), the mounting ring (8) it is interior
Portion offers locating slot (9), and the outer wall of the fixed ring (5) is fixedly installed with draw runner (10), and the outer wall of the draw runner (10) is sliding
It is dynamic to connect restraining position ring block (11), it is fixedly installed on the left of the stop collar (11) and extends to the internal limited block of locating slot (9)
(12), the outer wall of the connecting pipe (4) is fixedly installed with annulus (14), and the outer wall of the connecting pipe (4) is movably installed with
The secondary spring (13) being fixedly connected with annulus (14), the left side of the secondary spring (13) and the right side of stop collar (11) are fixed
Connection.
2. a kind of compressed natural gas steam line according to claim 1, it is characterised in that: on the right side of the mounting ring (8)
Internal diameter be less than fixed ring (5) outer diameter, the inside of the outer wall and mounting ring (8) with cyclization (7), which offers, to be mutually adapted
Bolt slot.
3. a kind of compressed natural gas steam line according to claim 1, it is characterised in that: the number of the limited block (12)
Amount is eight, and eight limited blocks (12) are distributed in a ring on stop collar (11), the quantity and limit of the locating slot (9)
The quantity of position block (12) is identical.
4. a kind of compressed natural gas steam line according to claim 1, it is characterised in that: the thickness of the sealing ring (6)
Degree is not less than one centimetre, and the outer diameter of the sealing ring (6) is greater than the outer diameter of connection valve (1).
5. a kind of compressed natural gas steam line according to claim 1, it is characterised in that: outside the limited block (12)
Wall is fillet setting, and the outer diameter of the connecting pipe (4) is adapted with the internal diameter of connection valve (1).
6. a kind of compressed natural gas steam line according to claim 1, it is characterised in that: the outer diameter of the annulus (14)
Greater than the internal diameter of secondary spring (13), length of the draw runner (10) on connecting pipe (4) is greater than stop collar (11) thickness
Twice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910287092.9A CN109973729A (en) | 2019-04-11 | 2019-04-11 | A kind of compressed natural gas steam line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910287092.9A CN109973729A (en) | 2019-04-11 | 2019-04-11 | A kind of compressed natural gas steam line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109973729A true CN109973729A (en) | 2019-07-05 |
Family
ID=67084029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910287092.9A Pending CN109973729A (en) | 2019-04-11 | 2019-04-11 | A kind of compressed natural gas steam line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109973729A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066066A (en) * | 2020-07-31 | 2020-12-11 | 湖北江华机电科技有限公司 | Portable intelligent valve control |
| CN113339580A (en) * | 2021-07-06 | 2021-09-03 | 深圳粤能能源技术有限公司 | Metering regulating valve for natural gas |
| CN113624563A (en) * | 2020-05-09 | 2021-11-09 | 天津大港油田圣达科技有限公司 | Online gas sampler for oil production well |
| CN113864547A (en) * | 2021-10-21 | 2021-12-31 | 信阳富地燃气有限公司 | Gas pipeline connecting structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201218371Y (en) * | 2008-05-13 | 2009-04-08 | 王俊忠 | Seal fitting assembly for automobile chassis |
| CN201242008Y (en) * | 2008-07-28 | 2009-05-20 | 简明锐 | Improved connection joint |
| CN201297462Y (en) * | 2008-10-30 | 2009-08-26 | 中国航天科技集团公司第六研究院第十一研究所 | A soft metal sealing structure for pipeline connection |
| CN206159707U (en) * | 2016-11-07 | 2017-05-10 | 中国工程物理研究院核物理与化学研究所 | From locking -type sealing connection device |
| CN207648289U (en) * | 2017-11-17 | 2018-07-24 | 珠海格力电器股份有限公司 | Anti-disassembly connects and has its air conditioner |
| CN109404634A (en) * | 2017-08-18 | 2019-03-01 | 广东美的制冷设备有限公司 | Anti-dismounted tube joint assembly and air conditioner |
-
2019
- 2019-04-11 CN CN201910287092.9A patent/CN109973729A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201218371Y (en) * | 2008-05-13 | 2009-04-08 | 王俊忠 | Seal fitting assembly for automobile chassis |
| CN201242008Y (en) * | 2008-07-28 | 2009-05-20 | 简明锐 | Improved connection joint |
| CN201297462Y (en) * | 2008-10-30 | 2009-08-26 | 中国航天科技集团公司第六研究院第十一研究所 | A soft metal sealing structure for pipeline connection |
| CN206159707U (en) * | 2016-11-07 | 2017-05-10 | 中国工程物理研究院核物理与化学研究所 | From locking -type sealing connection device |
| CN109404634A (en) * | 2017-08-18 | 2019-03-01 | 广东美的制冷设备有限公司 | Anti-dismounted tube joint assembly and air conditioner |
| CN207648289U (en) * | 2017-11-17 | 2018-07-24 | 珠海格力电器股份有限公司 | Anti-disassembly connects and has its air conditioner |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624563A (en) * | 2020-05-09 | 2021-11-09 | 天津大港油田圣达科技有限公司 | Online gas sampler for oil production well |
| CN112066066A (en) * | 2020-07-31 | 2020-12-11 | 湖北江华机电科技有限公司 | Portable intelligent valve control |
| CN112066066B (en) * | 2020-07-31 | 2022-08-16 | 湖北江华机电科技有限公司 | Portable intelligent valve control |
| CN113339580A (en) * | 2021-07-06 | 2021-09-03 | 深圳粤能能源技术有限公司 | Metering regulating valve for natural gas |
| CN113339580B (en) * | 2021-07-06 | 2022-07-26 | 深圳粤能能源技术有限公司 | Metering regulating valve for natural gas |
| CN113864547A (en) * | 2021-10-21 | 2021-12-31 | 信阳富地燃气有限公司 | Gas pipeline connecting structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109973729A (en) | A kind of compressed natural gas steam line | |
| CN202788725U (en) | Metal hard sealing oil tube head | |
| CN107842352A (en) | A kind of method for improving underground coal mine hydraulic fracturing anti-reflection effect of increasing production | |
| CN104612640A (en) | Underground coal mine drilling, heat injection and hole sealing integration method | |
| CN107842350A (en) | A kind of method that extraction rate is improved in high gas remainder quantity coal seam of underground coal mine | |
| CN203515345U (en) | Threaded-connection gas lift reverse-circulation double-wall drill pipe | |
| CN202023529U (en) | Friction type multifunctional hole packer for drawing out methane or injecting water | |
| CN208073409U (en) | A kind of fuel-economizing wellhead assembly | |
| CN207454984U (en) | A kind of slide-in type bellmouth pipe fitting | |
| CN202055793U (en) | Metal hard sealing casing head | |
| CN102434142A (en) | Coal underground gasification method | |
| CN209444913U (en) | A kind of gas pipeline facilitating installation | |
| CN108119096A (en) | SAGD steam injection wellhead assemblies | |
| CN207500612U (en) | A kind of long conveying natural gas valve | |
| CN208885338U (en) | A kind of coal mine underground mobile gas drainage under suction equipment | |
| CN201466660U (en) | Split type cable connection structure for oil gas exploitation intellect drill string adapter | |
| CN209067997U (en) | A kind of natural gas tube seal structures | |
| CN201891971U (en) | Branch pipeline fast installation device for main pipeline | |
| CN2665354Y (en) | Dual tubing heat extraction wellhead | |
| CN107869584A (en) | A kind of sealing technology of oil shale swinging gas retort oil gas vent sealing device | |
| CN213900029U (en) | Valve based on natural gas transportation is used | |
| CN207526458U (en) | A kind of gas production wellhead device for downhole pipeline | |
| CN219953318U (en) | Device for deep coal bed gas and geothermal combined exploitation | |
| CN103452529B (en) | A kind of co-well oil-pumping and water-injecting technique oil-extraction electric pump assembly | |
| CN209228313U (en) | A kind of high temperature resistant hollow stem connection sealing structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190705 |
|
| WD01 | Invention patent application deemed withdrawn after publication |