CN101240695A - Petroleum well drilling boring tool conveyer device - Google Patents
Petroleum well drilling boring tool conveyer device Download PDFInfo
- Publication number
- CN101240695A CN101240695A CNA2008100453773A CN200810045377A CN101240695A CN 101240695 A CN101240695 A CN 101240695A CN A2008100453773 A CNA2008100453773 A CN A2008100453773A CN 200810045377 A CN200810045377 A CN 200810045377A CN 101240695 A CN101240695 A CN 101240695A
- Authority
- CN
- China
- Prior art keywords
- drilling tool
- carrying platform
- boring tool
- type groove
- conveying device
- 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
Images
Landscapes
- Earth Drilling (AREA)
Abstract
A boring tool conveying mechanism of petroleum well drilling, for conveying boring tool, relates to equip manufacturing technique field for conveying petroleum boring tool, includes lifting mechanism and supporting mechanism, lifting mechanism includes carrying platform, lifting arm and a V-shape groove for loading boring tool, resolving two end jointing thread fastener injury when hauling boring tool to drill block by cable in present technology, and resolving the hydraulic cylinder problem caused by long hydraulic cylinder when sending boring tool to drill block by lifting power of hydraulic cylinder, the present invention designs a boring tool conveying mechanism of petroleum well drilling for lifting or turning-down drill block by remote-control hydraulic winch machine, hydraulic power is changed to mechanical power in the present invention , driving carrying platform and transfer device can not induces boring tool thread fastener injury, this has relative economical whole fabricating cost, so the aim for reducing drilling cost is achieved.
Description
Technical field: a kind of drilling tool conveying device of oil drilling, be used for implement the oil and gas well drilling process with drilling tool from ground to rig floor, perhaps by rig floor conveying earthward, relate to the equipment manufacturing technology field that drilling tool shifts in a kind of oil drilling.
Background technology: in the prior art, in the process of implementing petroleum drilling operation, because the floor space of rig is limited, can not all be placed in whole drilling tools that needs use on the rig floor, but drilling tool is placed on the pipe rack below the rig floor in advance, adopt pneumatic hoist or mechanical winch to block an end of drilling tool from the pipe rack on ground again when needing, by the anchor road drilling tool is dragged rig floor, drilling tool of finishing using on the rig floor or temporary transient no drilling tool also are drilling tool to be blocked the pipe rack that glides and send ground back to by the anchor road from the rig floor by pneumatic hoist or mechanical winch, when in well, being lowered to various sleeve pipes or other pipe strings, because pipe is more, also can only be emitted on the pipe rack on ground, adopting prior art to block then needs an end of G.I.H pipe to drag rig floor by the anchor road, raises up G.I.H then; Prior art can be finished drilling tool, sleeve pipe or other pipes are to the conveying of rig floor, perhaps from rig floor passing on earthward, but, the cable wire that needs to have slips earlier in the process of implementing is moved on the pipe rack from rig floor, hang up a drilling tool or other pipes and drag rig floor, basically be manually-operated, the careless slightly injury that will cause personnel, and, in the process that drags, be on pipe support and anchor road, to move because the drilling tool that is moved has an end, so the thread at drilling tool or pipe two ends can sustain damage, its result can cause serious connection and sealing problem, and production is afterwards caused unpredicted safety problem;
In order to address this problem, in recent years, also have adopt hydraulic cylinder as lifting power with drilling tool serve rig floor technology occur, its course of work is: hydraulic cylinder is connected below the platform of a carrying drilling tool, drilling tool be loaded in platform above, hydraulic cylinder is horizontal earlier, fluid injection in hydraulic cylinder then, the support arm of hydraulic cylinder is stretched out carrying platform raised and serve rig floor, but, because fed distance is far away, need long hydraulic cylinder just can finish, so not only need bigger manufacturing cost, and large-scale hydraulic cylinder also the hydraulic cylinder factors of instability can appear because hydraulic cylinder is oversize the process of the lifting that makes progress from horizontal level, the drilling tool that is loaded in addition in the carrying platform can not move forward in carrying platform, caused rig floor also will carry out short-range pulling with winch, the problem of Ren Ranyou infringement drilling tool screw thread is if there is fluctuation of service also can cause production accident slightly.
Goal of the invention: the objective of the invention is at the deficiencies in the prior art, adopt the remote control hydraulic wireline winch to be converted to mechanically operated mode, designed a kind of drilling tool conveying device that realizes drilling tool is served or changeed the oil drilling of following rig floor by remote control hydraulic wireline winch drive mechanical device.
The present invention is achieved in that and the present invention includes lifting mechanism and supporting mechanism, its spy just is: lifting mechanism comprises carrying platform 5 and lift arm 16, the rear end of carrying platform 5 is connected with the rear end bearing pin of lift arm 16, the front end of lift arm 16 has the wheel of moving, mobile wheel is arranged in the slideway in the bracing frame 12, the centre is provided with the V-type groove 19 of a carrying drilling tool on carrying platform 5, the both sides of V-type groove 19 are provided with safety pin 6, the inclined-plane that constitutes V-type groove 19 is provided with the drilling tool panel turnover mechanism, V-type groove 19 the centre be opening, in the opening in the middle of V-type groove 19 a drilling tool transfer mechanism is arranged, the drilling tool transfer mechanism is by hydraulic wireline winch 10, cable wire 8 and transfer device 9 constitute, transfer device 9 is arranged in the opening of V-type groove 19 centres, the two ends of transfer device 9 are connected by cable wire 8, front end at carrying platform 5 is provided with wire rope pulley and moves wheel, is provided with one and promotes wire rope pulley 7 below carrying platform 5; Supporting mechanism comprises a sliding anchor road 4 and a bracing frame 12, the lower end in sliding anchor road 4 is connected by bearing pin 14 with the front end of bracing frame 12, front end in sliding anchor road 4 is provided with a hooking device that is connected with rig floor 2, hooking device 2 is made of a bindiny mechanism that has groove, be provided with lifting hydraulic wireline winch 13 in the rear end in sliding anchor road 4, the cable wire that promotes hydraulic wireline winch 13 is communicated with lifting wire rope pulley 7 by the pulley 3 of sliding anchor road 4 front ends and the wire rope pulley of carrying platform 5 front ends, in bracing frame 12, be provided with a slideway, the mobile wheel of lift arm 16 front ends is arranged in the slideway in the bracing frame 12, the both sides of bracing frame 12 are provided with pusher 18, and the both sides of bracing frame 12 are provided with the hydraulic support leg 17 of band pipe rack 20; During use, earlier sliding anchor road 4 is raised up, and snap on the rig floor 1, hydraulic support leg 17 is opened, make and form interim pipe rack 20 between supporting leg 17 and the bracing frame 12, the drilling tool that needs are transferred is rolled on the interim pipe rack 20 on the supporting leg 17, starting supporting leg 17 makes interim pipe rack form the inclined-plane, drilling tool rests under the stopping of safety pin 6 in the V-type groove 19 in the inclined-plane is rolled into V-type groove 19 in the carrying platform 5, starts to promote hydraulic wireline winch 13, with carrying platform 5 pullings, and along the sliding anchor road 4 upwards up to rig floor 1, start hydraulic wireline winch 10 then and make transfer device 9 promote drilling tools forward, up to well head; If transport drilling tool downwards, then earlier with drilling tool in well head is put into V-type groove 19 carrying platform 5, make hydraulic wireline winch 10 counter-rotatings then, make 9 grades of transfer devices drilling tool slowly move, under the effect on slope, drilling tool is set level in carrying platform 5 gradually along V-type groove 19, counter-rotating promotes hydraulic wireline winch 13 then, under the gravity of carrying platform 5 and drilling tool, slowly drilling tool is put into ground, so just finished upwards transporting or moving down of a drilling tool.Advantage of the present invention and beneficial effect are: at technical elements, what the present invention adopted is that hydraulic coupling drives hydraulic pump, and driving hydraulic wireline winch, by hydraulic wireline winch hydraulic power is converted to machine power then, drive carrying platform and transfer device, therefore do not need large-scale hydraulic jack jacking, can not occur because the instability of the long generation of hydraulic jack, the transfer device that in the V-type groove, is provided with, can directly drilling tool be delivered to well head, substantially do not need to drag the carrying that drilling tool has just been finished drilling tool, thus the damage of drilling tool screw thread also can not be caused, at economic aspect, the hydraulic wireline winch that adopts drives, effect with relatively economical can reduce the whole manufacturing cost of whole devices, so can play the purpose that reduces drilling cost.
Description of drawings:
Fig. 1 is a mounting structure partial cutaway schematic of the present invention.
Perspective view when Fig. 1 draws in for the present invention.
The specific embodiment: provide embodiments of the invention: the present invention includes lifting mechanism and supporting mechanism below in conjunction with accompanying drawing, lifting mechanism comprises carrying platform 5 and lift arm 16, the rear end of carrying platform 5 is connected with the rear end bearing pin of lift arm 16, the front end of lift arm 16 has the wheel of moving, mobile wheel is arranged in the slideway in the bracing frame 12, the centre is provided with the V-type groove 19 of a carrying drilling tool on carrying platform 5, the both sides of V-type groove 19 are provided with safety pin 6, the inclined-plane that constitutes V-type groove 19 is provided with the drilling tool panel turnover mechanism, V-type groove 19 the centre be opening, in the opening in the middle of V-type groove 19 a drilling tool transfer mechanism is arranged, the drilling tool transfer mechanism is by hydraulic wireline winch 10, cable wire 8 and transfer device 9 constitute, transfer device 9 is arranged in the opening of V-type groove 19 centres, the two ends of transfer device 9 are connected by cable wire 8, front end at carrying platform 5 is provided with wire rope pulley and moves wheel, is provided with one and promotes wire rope pulley 7 below carrying platform 5; Supporting mechanism comprises a sliding anchor road 4 and a bracing frame 12, the lower end in sliding anchor road 4 is connected by bearing pin 14 with the front end of bracing frame 12, front end in sliding anchor road 4 is provided with a hooking device that is connected with rig floor 2, hooking device 2 is made of a bindiny mechanism that has groove, be provided with lifting hydraulic wireline winch 13 in the rear end in sliding anchor road 4, the cable wire that promotes hydraulic wireline winch 13 is communicated with lifting wire rope pulley 7 by the pulley 3 of sliding anchor road 4 front ends and the wire rope pulley of carrying platform 5 front ends, in bracing frame 12, be provided with a slideway, the mobile wheel of lift arm 16 front ends is arranged in the slideway in the bracing frame 12, the both sides of bracing frame 12 are provided with pusher 18, and the both sides of bracing frame 12 are provided with the hydraulic support leg 17 of band pipe rack 20; During use, hydraulic support leg 17 is opened, make and form interim pipe rack 20 between supporting leg 17 and the bracing frame 12, so just fixed the operating position of this device, hang up cable wire by the rig travelling block then, and the other end of cable wire is hung over the front end in this device sliding anchor road 4, sliding anchor road 4 is raised up, it is moved on the rig floor, by hooking device 2 lodges of sliding anchor road 4 front ends on rig floor 1, so just finished this Unit Installation, after finishing installation, the drilling tool that needs are transferred is rolled on the interim pipe rack 20 on the supporting leg 17, starting supporting leg 17 makes interim pipe rack 20 form the inclined-plane, at this moment the drilling tool on interim pipe rack 20 can be in the inclined-plane be rolled into V-type groove 19 in the carrying platform 5, after drilling tool is rolled in the V-type groove 19, under the stopping of safety pin 6, can not be rolled into the another side of V-type groove 19, can only rest in the V-type groove 19, so just finished and transferred laying of drilling tool, start hydraulic wireline winch 10 then, transfer device 9 is moved to the tail end of being transferred drilling tool, start then and promote hydraulic wireline winch 13, carrying platform 5 is spurred forward, and move upward along sliding anchor road 4, because the rear end of carrying platform 5 and the rear end of lift arm 16 are linked together by bearing pin, so when carrying platform 5 moves forward, lift arm 16 also moves forward, under the affecting that promotes hydraulic wireline winch 13, carrying platform 5 continues upwards to move in the track in sliding anchor road 4, because the mobile wheel of lift arm 16 front ends is arranged in the slideway in the bracing frame 12, so just can not continue to move forward arrive the front end dead point of bracing frame 12 slideways when the mobile wheel of bracing frame 12 front ends after, at this moment, under the affecting that promotes hydraulic wireline winch 13, carrying platform 5 continues upwards to move in the track in sliding anchor road 4, its tail end is owing to the rear end with lift arm 16 is that bearing pin links together, so when the front end of carrying platform 5 continues to make progress in the track in sliding anchor road 4 when mobile, its tail end just comes the rear end pull-up of lift arm 16, reach the purpose of lifting load-bearing platform 5 tail ends, the drilling tool that is placed in the V-type groove 19 is moved on can be steadily, after the front end of carrying platform 5 arrives rig floor 1, starting hydraulic wireline winch 10 makes transfer device 9 promote drilling tool forward, up to well head, hang up cable wire drilling tool is sling on the drilling tool string that is connected G.I.H, so just finished that a drilling tool moves up and the process of G.I.H; If transport drilling tool downwards, earlier finish this Unit Installation according to aforementioned manner, the drilling tool that will take out in well hangs onto in the V-type groove 19 carrying platform 5 then, 5 of later carrying platforms so have certain gradient owing to hoist, so the drilling tool that is put in the V-type groove 19 can slide the rear end to V-type groove 19 along the inclined-plane, in order not make gliding speed too fast, cause infringement to drilling tool, the transfer device 9 that is provided with keeps off always and is moving down the tail end of drilling tool, make hydraulic wireline winch 10 counter-rotatings, make 9 grades of transfer devices drilling tool under the effect on slope, setting level gradually slowly along V-type groove 19, counter-rotating promotes hydraulic wireline winch 13 then, because carrying platform 5 and the downward gravity of drilling tool, under the affecting that promotes hydraulic wireline winch 13, lift arm 16 is with in whole slideways of getting back in the bracing frame 12 slowly, carrying platform 5 continues to transfer, lift arm 16 is retreated in the slideway in bracing frame 12 under thrust, all get back in the bracing frame 12 up to carrying platform 5, at this moment, start the drilling tool panel turnover mechanism that is arranged on V-type groove 19 inclined-planes, drilling tool in the V-type groove 19 is routed up V-type groove 19, arrive on the pusher 18 of bracing frame 12 both sides setting, restart pusher 18, drilling tool shifted onto between supporting leg 17 and the bracing frame 12 form on the interim pipe rack 20, so just finished a moving process that drilling tool is downward.
Claims (8)
1, a kind of drilling tool conveying device of oil drilling, comprise lifting mechanism and supporting mechanism, it is characterized in that: described lifting mechanism comprises carrying platform and lift arm, the rear end of carrying platform is connected with the rear end bearing pin of lift arm, the front end of lift arm has the wheel of moving, the centre is provided with the V-type groove on carrying platform, in the opening in the middle of the V-type groove, a drilling tool transfer mechanism is arranged, described supporting mechanism comprises a sliding anchor road and a bracing frame, and the lower end in sliding anchor road is connected by bearing pin with the front end of bracing frame.
2, the drilling tool conveying device of oil drilling according to claim 1, it is characterized in that: the both sides of described V-type groove are provided with safety pin, and the inclined-plane that constitutes the V-type groove is provided with the drilling tool panel turnover mechanism.
3, the drilling tool conveying device of oil drilling according to claim 1 is characterized in that: the transfer device of described drilling tool transfer mechanism is arranged in the middle opening of V-type groove, and the two ends of transfer device are connected by cable wire.
4, the drilling tool conveying device of oil drilling according to claim 1 is characterized in that: the front end of described carrying platform is provided with wire rope pulley and moves wheel, is provided with one and promotes wire rope pulley below carrying platform.
5, the drilling tool conveying device of oil drilling according to claim 1 is characterized in that: the front end in described sliding anchor road is provided with a hooking device that is connected with rig floor, and hooking device is made of a bindiny mechanism that has groove.
6, the drilling tool conveying device of oil drilling according to claim 1 is characterized in that: the rear end in described sliding anchor road is provided with the lifting hydraulic wireline winch.
7, the drilling tool conveying device of oil drilling according to claim 1 is characterized in that: be provided with a slideway in support frame as described above.
8, the drilling tool conveying device of oil drilling according to claim 1 is characterized in that: the hydraulic support leg that is provided with pusher and band pipe rack on the both sides of support frame as described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100453773A CN101240695A (en) | 2008-02-19 | 2008-02-19 | Petroleum well drilling boring tool conveyer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100453773A CN101240695A (en) | 2008-02-19 | 2008-02-19 | Petroleum well drilling boring tool conveyer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101240695A true CN101240695A (en) | 2008-08-13 |
Family
ID=39932479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100453773A Pending CN101240695A (en) | 2008-02-19 | 2008-02-19 | Petroleum well drilling boring tool conveyer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101240695A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587847A (en) * | 2012-03-07 | 2012-07-18 | 青岛恒基泰机电科技有限公司 | Continuous conveying device for petroleum tubular column |
| CN103696710A (en) * | 2012-09-28 | 2014-04-02 | 中国石油化工股份有限公司 | Overground operating string delivery mechanism |
| CN103790525A (en) * | 2014-02-28 | 2014-05-14 | 宝鸡石油机械有限责任公司 | Oil cylinder lifting type drilling rig power catwalk |
| CN103867143A (en) * | 2014-03-04 | 2014-06-18 | 常州大学 | Bi-articulated safety pin mechanism for power catwalk machine transmission rack |
| CN103883271A (en) * | 2014-03-04 | 2014-06-25 | 常州大学 | Double-slider safety pin mechanism for conveying frame of power catwalk machine |
| CN105201427A (en) * | 2015-11-03 | 2015-12-30 | 四川宏华石油设备有限公司 | Power catwalk |
| CN105507829A (en) * | 2016-01-18 | 2016-04-20 | 李晓峰 | Automatic control operating platform used for workover rig and provided with automatic tubing string pulling system |
| CN105545227A (en) * | 2016-02-03 | 2016-05-04 | 湖南三一石油科技有限公司 | Petroleum drilling and production equipment, tubular column conveying system and tubular column lifting device |
| CN106429428A (en) * | 2016-07-27 | 2017-02-22 | 胜利油田胜利动力机械集团有限公司石油机械分公司 | Ground integrated conveyer |
| CN107013173A (en) * | 2017-06-14 | 2017-08-04 | 青岛泰众能源技术有限公司 | It is a kind of freely to adjust the well workover dynamic catwalk of angle |
| CN112459733A (en) * | 2020-11-03 | 2021-03-09 | 成都大学 | Rod conveying vehicle for assisting installation of drill rod of shaft drilling machine and drill rod installation method |
| CN112912587A (en) * | 2018-09-11 | 2021-06-04 | 钻探技术服务有限公司 | Pipeline processor device |
| CN113338824A (en) * | 2021-07-12 | 2021-09-03 | 新疆克拉玛依市荣昌有限责任公司 | Active three drilling tool conveyors |
-
2008
- 2008-02-19 CN CNA2008100453773A patent/CN101240695A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587847A (en) * | 2012-03-07 | 2012-07-18 | 青岛恒基泰机电科技有限公司 | Continuous conveying device for petroleum tubular column |
| CN102587847B (en) * | 2012-03-07 | 2014-04-02 | 青岛恒基泰机电科技有限公司 | Continuous conveying device for petroleum tubular column |
| CN103696710A (en) * | 2012-09-28 | 2014-04-02 | 中国石油化工股份有限公司 | Overground operating string delivery mechanism |
| CN103696710B (en) * | 2012-09-28 | 2016-04-20 | 中国石油化工股份有限公司 | Aboveground working string conveying device |
| CN103790525A (en) * | 2014-02-28 | 2014-05-14 | 宝鸡石油机械有限责任公司 | Oil cylinder lifting type drilling rig power catwalk |
| CN103867143B (en) * | 2014-03-04 | 2016-04-13 | 常州大学 | The two hinged safety pin mechanism of power catwalk machine carriage |
| CN103883271B (en) * | 2014-03-04 | 2016-01-20 | 常州大学 | Power catwalk machine carriage double-slider safety pin mechanism |
| CN103883271A (en) * | 2014-03-04 | 2014-06-25 | 常州大学 | Double-slider safety pin mechanism for conveying frame of power catwalk machine |
| CN103867143A (en) * | 2014-03-04 | 2014-06-18 | 常州大学 | Bi-articulated safety pin mechanism for power catwalk machine transmission rack |
| CN105201427A (en) * | 2015-11-03 | 2015-12-30 | 四川宏华石油设备有限公司 | Power catwalk |
| CN105507829A (en) * | 2016-01-18 | 2016-04-20 | 李晓峰 | Automatic control operating platform used for workover rig and provided with automatic tubing string pulling system |
| CN105545227A (en) * | 2016-02-03 | 2016-05-04 | 湖南三一石油科技有限公司 | Petroleum drilling and production equipment, tubular column conveying system and tubular column lifting device |
| CN106429428A (en) * | 2016-07-27 | 2017-02-22 | 胜利油田胜利动力机械集团有限公司石油机械分公司 | Ground integrated conveyer |
| CN107013173A (en) * | 2017-06-14 | 2017-08-04 | 青岛泰众能源技术有限公司 | It is a kind of freely to adjust the well workover dynamic catwalk of angle |
| CN112912587A (en) * | 2018-09-11 | 2021-06-04 | 钻探技术服务有限公司 | Pipeline processor device |
| CN112459733A (en) * | 2020-11-03 | 2021-03-09 | 成都大学 | Rod conveying vehicle for assisting installation of drill rod of shaft drilling machine and drill rod installation method |
| CN113338824A (en) * | 2021-07-12 | 2021-09-03 | 新疆克拉玛依市荣昌有限责任公司 | Active three drilling tool conveyors |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101240695A (en) | Petroleum well drilling boring tool conveyer device | |
| CN201155304Y (en) | Petroleum well drilling boring tool conveyer device | |
| US9057227B2 (en) | Pipe handling apparatus | |
| CN201116453Y (en) | Drilling tool sleeve transmission device | |
| CN103696710B (en) | Aboveground working string conveying device | |
| RU2405102C2 (en) | System and method of large-length objects transfer | |
| CN202544741U (en) | Door-shaped drive drilling machine with twin tower teeth | |
| CN201412085Y (en) | Steel wire rope pull-up type drilling machine power catwalk | |
| CN204283256U (en) | A kind of drill stem conveying device | |
| CN101769131A (en) | Conveying mechanism used for oil drilling | |
| CN203769680U (en) | Novel automatic catwalk device | |
| CN101787860B (en) | Conveying mechanism and method of upper drilling platform and lower drilling platform of drilling pipe used for petroleum drilling | |
| CN107869315B (en) | Automatic change workover rig | |
| CN202064840U (en) | Four-drill column drill derrick | |
| CN101769130B (en) | Method for conveying drill pipe used for oil drilling on/off drill stand | |
| CN201627547U (en) | Conveying mechanism for oil drilling | |
| CN102518396A (en) | Automatic drilling machine | |
| US9243461B1 (en) | Catwalk mechanism and method for installing tubulars on a drill string | |
| KR20170003233U (en) | A handling system for drill pipe | |
| CN201598992U (en) | Conveying mechanism for elevation of drill pipes for oil drilling | |
| CN202659175U (en) | Power catwalk for petroleum drilling machine | |
| CN112049584A (en) | Elevated catwalk | |
| CN204283258U (en) | A kind of pipe slacking block and drill stem conveying device | |
| CN111980602B (en) | Multi-drill throwing power catwalk integrating hydraulic sources and one-key multi-drill throwing operation method | |
| CN112145102B (en) | Power catwalk |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080813 |