CN108144374A - Compressed-air filter - Google Patents
Compressed-air filter Download PDFInfo
- Publication number
- CN108144374A CN108144374A CN201810127078.8A CN201810127078A CN108144374A CN 108144374 A CN108144374 A CN 108144374A CN 201810127078 A CN201810127078 A CN 201810127078A CN 108144374 A CN108144374 A CN 108144374A
- Authority
- CN
- China
- Prior art keywords
- area
- filter core
- cylinder
- compressed
- filtering
- 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- Withdrawn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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0005—Mounting of filtering elements within casings, housings or frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
- B01D46/0041—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/446—Auxiliary equipment or operation thereof controlling filtration by pressure measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a kind of compressed-air filters,It is intended to provide a kind of contact area that has and can increase between gas and filter core,The compressed-air filter for the advantages of improving integral filter effect and filter efficiency,Its key points of the technical solution are that,Include the exhaust area set gradually from top to bottom in cylinder,Filtering area and dirt colleceting area,Inlet tube and outlet are connected separately on cylinder,Filtering area is separated with dirt colleceting area by pedestal,Exhaust area is isolated with filtering area by installing plate,Filter core is fixed between pedestal and installing plate,Filtering is divided into Zuo Qu and You Qu by filter core,The both sides that pedestal is located at filter core offer through-hole,Two through-holes are connected by dirt colleceting area Jiang Zuoqu with right area,Air can be filtered it from the two sides of filter core,The contact area of air and filter core can so be increased,Increase the utilization rate of cartridge surface,So as to improve the filter efficiency of the filter effect of filter core and entirety,So as to improve the production efficiency of natural gas entirety.
Description
Technical field
The present invention relates to gas treatment equipment fields, and in particular to a kind of compressed-air filter.
Background technology
Natural gas refers to naturally contain the mixture of the hydro carbons and non-hydrocarbon gases in stratum.In petroleum geology,
It is often referred to casing-head gas and reservoir gas.It is formed based on hydro carbons, and contains non-hydrocarbon gas.Natural gas is contained in underground porous gap rock
In layer, including casing-head gas, reservoir gas, coal bed gas, gas of mud volcano and biology generation gas etc., also have on a small quantity for coal seam.It is excellent
Matter fuel and industrial chemicals.
Natural gas is mainly used for making fuel, can manufacture carbon black, chemicals and liquefied petroleum gas, by natural gas production
Propane, butane are the important source materials of modern industry.
In the gathering and transportation technology in natural gas production gas field, mined natural gas is usually with some liquid from gas well
Body and solid impurity, such as condensate, condensation water, water flooding and landwaste dust, it is necessary to carry out gas-liquid in well site and gas gathering station
（Gu）Separating treatment is separated them from natural gas.Therefore separator become natural gas production processing during
Key equipment, it is desirable that separator separates light component, water and the impurity in natural gas as far as possible, reduces and enters subordinate's stream
Journey avoids influencing normal production and safety.
At present, the Chinese patent of Publication No. CN104056503A discloses a kind of multipurpose horizontal natural gas separating and filtering
Device, it includes cylinder, blind plate, blind plate retaining mechanism, and latch plate sliding cavity, blind plate are formed back to the side of separating and filtering chamber in blind plate
Retaining mechanism includes latch plate, center dish axle, spider, towing plate and spider operation handle, in spider back to the one of blind plate
Side fixed center disk casing, spider casing is vertical with spider, is set on wall body of the blind plate back to the side of separating and filtering chamber
Cylinder pressure release response means are put, which matches with spider, in the circumferencial direction of blind plate mating interface
And cleaning hole is opened up corresponding to the position of blind plate lock slots, sealing screw is arranged in cleaning hole.
Although this multipurpose horizontal natural gas separator-filter can fast and easily implement blind plate lock slots clear
It is clean, but since when it is filtered and the contact area of gas is small, filter effect is general, and filter efficiency is relatively low.
Invention content
The object of the present invention is to provide a kind of compressed-air filters, and connecing between gas and filter core can be increased by having
The advantages of contacting surface is accumulated, raising integral filter effect and filter efficiency.
The present invention above-mentioned technical purpose technical scheme is that：
A kind of compressed-air filter including cylinder and the end socket for being connected to cylinder both ends, includes from top to bottom successively in cylinder
Exhaust area, filtering area and the dirt colleceting area of setting are connected separately with inlet tube and outlet on cylinder, and filtering area passes through with dirt colleceting area
Pedestal separates, and exhaust area is isolated with filtering area by installing plate, is fixed with filter core between pedestal and installing plate, and filter core is by filtering area
It is divided into Zuo Qu and You Qu, the both sides that pedestal is located at filter core offer through-hole, and two through-holes are connected by dirt colleceting area Jiang Zuoqu and right area
It is logical.
By using above-mentioned technical proposal, gas enters the filtering area in cylinder from inlet tube, can be by pedestal
Through-hole enters in dirt colleceting area, then enters in the cylinder on the right side of filter core from the through-hole of opposite side, and then is carried out from the two sides of filter core
Filtering, the gas after filtering enters at the installing plate of cartridge top in exhaust area, and passes through outlet and discharged.
Such air can be filtered it from the two sides of filter core, can so increase the contact surface of air and filter core
Product increases the utilization rate of cartridge surface, natural so as to improve so as to improve the filter efficiency of the filter effect of filter core and entirety
The production efficiency of gas entirety.
Further setting：Installing plate is included perpendicular to the riser that horizontal plane is set and the transverse slat for being connected to riser both ends, horizontal
Plate is connected to the both sides of cylinder.
By using above-mentioned technical proposal, installing plate includes transverse slat and riser, can be by exhaust area in cylinder and filtering area
Separate, while installation of the filter core in cylinder is facilitated to fix.
Further setting：Inlet tube is located on the cylinder lateral wall of filtering area, and is open and sets towards riser, the length of riser
More than the diameter of inlet tube.
By using above-mentioned technical proposal, inlet tube is set towards riser, and the natural gas that can make entrance is direct to riser
It collides, the natural gas of inlet pipes is avoided directly to hit filter core and influences the service life of filter core.
Further setting：Filter core is held away from the transverse slat of inlet tube side, and is connected with transverse slat center, transverse slat and filter
Core junction is equipped with the guide rod for gas to be guided to flow.
By using above-mentioned technical proposal, filter core is fixed on transverse slat and is connected with the center of transverse slat, natural after filtering
Gas can be entered by the opening at transverse slat center in exhaust area, on the one hand guide rod can make thread core more be securely fixed in installation
On plate, the discharge of the natural gas after filtering on the other hand can be guided, natural gas is avoided to be discharged from filter core other positions.
Further setting：The end socket center of cylinder body bottom offers blow-off pipe, and the end socket at the top of cylinder is equipped with and hangs
Ear.
By using above-mentioned technical proposal, by filter element filtering, the liquid impurity after filtering is pooled on bottom plate natural gas,
It is emitted into dirt colleceting area and assembled by through-hole, after collecting to a certain extent, operating personnel can open blow-off pipe and it is carried out
Discharge, the setting of lifting lug can be conveniently operated personnel and sling whole equipment, consequently facilitating carrying.
Further setting：Inlet pressure gauge and delivery gauge are respectively equipped on inlet tube and outlet.
Further setting：Corresponded on pedestal filter core centre position be equipped with for discharged filtering after dirt mudhole.
By using above-mentioned technical proposal, after being filtered due to filter core to natural gas, some liquid impurities are also had
Residual, therefore in the centrally disposed mudhole of bottom plate, the dirt in filter core centre position can be facilitated discharge, avoid reduction filter core
Using effect.
In conclusion the invention has the advantages that：
Air can be filtered it from the two sides of filter core, can so increase the contact area of air and filter core, increase
The utilization rate of cartridge surface, so as to improve the filter efficiency of the filter effect of filter core and entirety, so as to improve natural gas entirety
Production efficiency.
Description of the drawings
The present invention is further described below in conjunction with the accompanying drawings.
Fig. 1 is the structure diagram of embodiment 1.
In figure, 1, cylinder；11st, end socket；12nd, inlet tube；13rd, outlet；14th, blow-off pipe；15th, lifting lug；16th, inlet pressure
Table；17th, delivery gauge；2nd, exhaust area；3rd, filtering area；31st, Zuo Qu；32nd, You Qu；4th, dirt colleceting area；5th, pedestal；51st, through-hole；
52nd, mudhole；6th, installing plate；61st, riser；62nd, transverse slat；7th, guide rod.
Specific embodiment
The specific embodiment of the present invention is described further below in conjunction with the accompanying drawings.
The technical solution adopted in the present invention is：
Embodiment 1, a kind of compressed-air filter, as shown in Figure 1, including the cylinder 1 of whole cylindrical form setting, cylinder 1
Both ends open is set, and 1 top of cylinder and 1 bottom end of cylinder are connected with end socket 11, and end socket 11 is set in half-oval shaped.Cylinder 1 leans on
The position at nearly top is equipped with inlet tube 12 and outlet 13, and inlet tube 12 is located at the left and right sides of cylinder 1 with outlet 13 respectively.
As shown in Figure 1, being communicated with inlet pressure gauge 16 on inlet tube 12, delivery gauge 17 is connected on outlet 13,
Air pressure at inlet tube 12 and the air pressure at outlet 13 can be monitored in real time, personnel easy to operation are to natural gas flow
The regulation and control of amount.The end socket 11 at 1 top of cylinder is equipped with lifting lug 15, and blow-off pipe 14, blowdown are equipped among the end socket 11 of 1 bottom of cylinder
Pipe 14 is connected with end socket 11.Blow-off pipe 14 is arranged at the centre position of end socket 11 with lifting lug 15.
As shown in Figure 1, cylinder 1 and two 11 inside of end socket form three parts, it is followed successively by exhaust area 2, filtering from top to bottom
Area 3 and dirt colleceting area 4.Installing plate 6 is equipped between exhaust area 2 and filtering area 3, installing plate 6 includes riser 61 and two pieces of transverse slats 62, erects
Plate 61 is set close to 12 side of inlet tube, and the transverse slat 62 positioned at 6 left side of installing plate is fixed on 6 top of installing plate and 1 inner wall of cylinder
On, the transverse slat 62 positioned at 6 right side of installing plate is fixed on the inner wall of 6 bottom of installing plate and cylinder 1.The length of riser 61 be more than into
The length of mouth pipe 12, inlet tube 12 are set towards riser 61.
As shown in Figure 1, separated between filtering area 3 and dirt colleceting area 4 by pedestal 5, pedestal 5 and the transverse slat of 6 bottom of installing plate
Filter core is fixedly connected between 62, filter core will separate in filtering area 3 in left area 31 and right area 32, and cartridge top passes through installing plate 6
It is connected with exhaust area 2, cartridge top is equipped with guide rod 7, and guide rod 7 is arranged in a vertical horizontal plane and extends in exhaust area 2.Filter core bottom
Centre position pedestal 5 on offer mudhole 52, the liquid impurity among filter core is located at after natural gas filtering to be passed through
Mudhole 52 is discharged into dirt colleceting area 4 and is discharged.It is located on pedestal 5 at left and right sides of filter core and is equipped with through-hole 51, connected
Filter area 3 and dirt colleceting area 4.
When natural gas enters cylinder 1 from inlet tube 12,1 bottom discharge of guide cylinder is drawn, then pass through by riser 61
Through-hole 51 enters in dirt colleceting area 4, and enters 1 opposite side of cylinder from the through-hole 51 on right side, passes through filter element filtering from two sides, finally
Enter exhaust area 2 from the top position among filter core to be discharged.The contact area of gas is so increased, improves filtering
Efficiency.
The above are preferred embodiments of the present invention, not makees limitation in any form, every foundation to the present invention
Technical spirit any simple modification, equivalent change and modification made to the above embodiment of the present invention, belongs to inventive technique
In the range of scheme.
Claims (7)
1. a kind of compressed-air filter, including cylinder（1）Be connected to cylinder（1）The end socket at both ends（11）, it is characterised in that：
The cylinder（1）The interior exhaust area including setting gradually from top to bottom（2）, filtering area（3）And dirt colleceting area（4）, cylinder（1）Upper point
Inlet tube is not connected with it（12）And outlet（13）, filtering area（3）With dirt colleceting area（4）Pass through pedestal（5）Separate, exhaust area（2）
With filtering area（3）Pass through installing plate（6）Isolation, pedestal（5）With installing plate（6）Between be fixed with filter core, filter core is by filtering area（3）
It is divided into left area（31）With right area（32）, pedestal（5）Through-hole is offered positioned at the both sides of filter core（51）, two through-holes（51）Pass through collection
Dirty area（4）By left area（31）With right area（32）Connection.
2. compressed-air filter according to claim 1, it is characterised in that：The installing plate（6）Including perpendicular to water
The riser of plane setting（61）Be connected to riser（61）The transverse slat at both ends（62）, transverse slat（62）It is connected to cylinder（1）'s
Both sides.
3. compressed-air filter according to claim 2, it is characterised in that：The inlet tube（12）Positioned at filtering area
（3）Cylinder（1）On side wall, and towards riser（61）Opening setting, riser（61）Length be more than inlet tube（12）Diameter.
4. compressed-air filter according to claim 3, it is characterised in that：The filter core is held away from inlet tube
（12）The transverse slat of side（62）On, and and transverse slat（62）Center connects, transverse slat（62）It is equipped with to guide gas with filter core junction
The guide rod of body flowing（7）.
5. compressed-air filter according to claim 1, it is characterised in that：The cylinder（1）The end socket of bottom（11）
Center offers blow-off pipe（14）, cylinder（1）The end socket at top（11）It is equipped with lifting lug（15）.
6. compressed-air filter according to claim 5, it is characterised in that：The inlet tube（12）And outlet（13）
On be respectively equipped with inlet pressure gauge（16）And delivery gauge（17）.
7. compressed-air filter according to claim 1, it is characterised in that：The pedestal（5）Among upper corresponding filter core
Position be equipped with for discharged filtering after dirt mudhole（52）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810127078.8A CN108144374A (en) | 2018-02-08 | 2018-02-08 | Compressed-air filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810127078.8A CN108144374A (en) | 2018-02-08 | 2018-02-08 | Compressed-air filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108144374A true CN108144374A (en) | 2018-06-12 |
Family
ID=62459837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810127078.8A Withdrawn CN108144374A (en) | 2018-02-08 | 2018-02-08 | Compressed-air filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108144374A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351120A (en) * | 2018-11-12 | 2019-02-19 | 中国人民解放军海军工程大学 | A kind of compression air-filtering device |
| CN110393990A (en) * | 2019-08-26 | 2019-11-01 | 杭州唐维过滤器材有限公司 | A kind of anti-corrosion vacuum line filter with foldable filter element |
| CN111389128A (en) * | 2020-04-10 | 2020-07-10 | 江苏盛伟燃气科技有限公司 | Direct-buried gas filter |
| CN112957834A (en) * | 2021-03-11 | 2021-06-15 | 中国石油大学(北京) | Switching two-stage coalescence-separation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07171326A (en) * | 1993-02-18 | 1995-07-11 | Taimei Kinzoku Kogyo Kk | Gas filter |
| DE10306216A1 (en) * | 2002-09-12 | 2004-03-18 | Gel-Verfahrenstechnik Gmbh & Co. Kg | Pneumatic conveyor for bulk materials has filter made from sintered material which is mounted below dome at top of conveyor tube which can be evacuated |
| CN2787288Y (en) * | 2005-05-15 | 2006-06-14 | 李卫红 | Natural gas precise filter |
| CN101260960A (en) * | 2008-04-11 | 2008-09-10 | 常熟市上海飞奥压力容器制造有限公司 | Natural gas filter |
| CN103405973A (en) * | 2013-08-27 | 2013-11-27 | 成都添益天然气压缩机制造有限公司 | Quick-opening natural gas filter |
| CN203577517U (en) * | 2013-11-08 | 2014-05-07 | 无锡市环亚环境工程有限公司 | Filter drum dust collector |
| CN204219921U (en) * | 2014-09-28 | 2015-03-25 | 重庆金山通用机械制造有限公司 | Filter |
| CN104958961A (en) * | 2015-05-26 | 2015-10-07 | 蚌埠市瑞风净化设备工程有限责任公司 | Automatic cleaning air purifying apparatus |
| CN106118778A (en) * | 2016-08-29 | 2016-11-16 | 四川启昌管道工程有限责任公司 | A kind of novel natural gas filter separator |
| CN106215543A (en) * | 2016-08-23 | 2016-12-14 | 成都正升能源技术开发有限公司 | It is easy to the vertical gas liquid separating method of fixing assembling |
| CN206214921U (en) * | 2016-10-31 | 2017-06-06 | 广东长征机械有限公司 | It is a kind of to carry out the filter that blow-back clears up dust |
| CN107362619A (en) * | 2016-05-12 | 2017-11-21 | 新乡市利菲尔特滤器股份有限公司 | A kind of sterilization type air cleaner |
| CN206837711U (en) * | 2017-03-22 | 2018-01-05 | 谢本孝 | A kind of natural gas filter |
| CN208049585U (en) * | 2018-02-08 | 2018-11-06 | 江苏优耐特过滤装备有限公司 | Compressed-air filter |
-
2018
- 2018-02-08 CN CN201810127078.8A patent/CN108144374A/en not_active Withdrawn
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07171326A (en) * | 1993-02-18 | 1995-07-11 | Taimei Kinzoku Kogyo Kk | Gas filter |
| DE10306216A1 (en) * | 2002-09-12 | 2004-03-18 | Gel-Verfahrenstechnik Gmbh & Co. Kg | Pneumatic conveyor for bulk materials has filter made from sintered material which is mounted below dome at top of conveyor tube which can be evacuated |
| CN2787288Y (en) * | 2005-05-15 | 2006-06-14 | 李卫红 | Natural gas precise filter |
| CN101260960A (en) * | 2008-04-11 | 2008-09-10 | 常熟市上海飞奥压力容器制造有限公司 | Natural gas filter |
| CN103405973A (en) * | 2013-08-27 | 2013-11-27 | 成都添益天然气压缩机制造有限公司 | Quick-opening natural gas filter |
| CN203577517U (en) * | 2013-11-08 | 2014-05-07 | 无锡市环亚环境工程有限公司 | Filter drum dust collector |
| CN204219921U (en) * | 2014-09-28 | 2015-03-25 | 重庆金山通用机械制造有限公司 | Filter |
| CN104958961A (en) * | 2015-05-26 | 2015-10-07 | 蚌埠市瑞风净化设备工程有限责任公司 | Automatic cleaning air purifying apparatus |
| CN107362619A (en) * | 2016-05-12 | 2017-11-21 | 新乡市利菲尔特滤器股份有限公司 | A kind of sterilization type air cleaner |
| CN106215543A (en) * | 2016-08-23 | 2016-12-14 | 成都正升能源技术开发有限公司 | It is easy to the vertical gas liquid separating method of fixing assembling |
| CN106118778A (en) * | 2016-08-29 | 2016-11-16 | 四川启昌管道工程有限责任公司 | A kind of novel natural gas filter separator |
| CN206214921U (en) * | 2016-10-31 | 2017-06-06 | 广东长征机械有限公司 | It is a kind of to carry out the filter that blow-back clears up dust |
| CN206837711U (en) * | 2017-03-22 | 2018-01-05 | 谢本孝 | A kind of natural gas filter |
| CN208049585U (en) * | 2018-02-08 | 2018-11-06 | 江苏优耐特过滤装备有限公司 | Compressed-air filter |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351120A (en) * | 2018-11-12 | 2019-02-19 | 中国人民解放军海军工程大学 | A kind of compression air-filtering device |
| CN110393990A (en) * | 2019-08-26 | 2019-11-01 | 杭州唐维过滤器材有限公司 | A kind of anti-corrosion vacuum line filter with foldable filter element |
| CN111389128A (en) * | 2020-04-10 | 2020-07-10 | 江苏盛伟燃气科技有限公司 | Direct-buried gas filter |
| CN111389128B (en) * | 2020-04-10 | 2021-10-15 | 江苏盛伟燃气科技有限公司 | Direct-buried gas filter |
| CN112957834A (en) * | 2021-03-11 | 2021-06-15 | 中国石油大学(北京) | Switching two-stage coalescence-separation system |
| CN112957834B (en) * | 2021-03-11 | 2021-11-19 | 中国石油大学(北京) | Switching two-stage coalescence-separation system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180612 |
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| WW01 | Invention patent application withdrawn after publication |