CN1742167A - 万向接头 - Google Patents
万向接头 Download PDFInfo
- Publication number
- CN1742167A CN1742167A CN200380109079.1A CN200380109079A CN1742167A CN 1742167 A CN1742167 A CN 1742167A CN 200380109079 A CN200380109079 A CN 200380109079A CN 1742167 A CN1742167 A CN 1742167A
- Authority
- CN
- China
- Prior art keywords
- actuator
- cavity
- projection
- moving sleeve
- universal joint
- 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.)
- Granted
Links
- 238000012546 transfer Methods 0.000 claims description 12
- 239000011796 hollow space material Substances 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims 2
- 238000000926 separation method Methods 0.000 claims 2
- 238000013461 design Methods 0.000 description 16
- 230000002860 competitive effect Effects 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 7
- 230000003321 amplification Effects 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 238000010008 shearing Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000036961 partial effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/02—Spanners; Wrenches with rigid jaws
- B25B13/06—Spanners; Wrenches with rigid jaws of socket type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0007—Connections or joints between tool parts
- B25B23/0014—Screwdriver- or wrench-heads provided with cardan joints or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0007—Connections or joints between tool parts
- B25B23/0028—Angular adjustment means between tool head and handle
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/18—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts the coupling parts (1) having slidably-interengaging teeth
- F16D3/185—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts the coupling parts (1) having slidably-interengaging teeth radial teeth connecting concentric inner and outer coupling parts
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/202—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints
- F16D3/205—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
- F16D3/2057—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part having four or more pins, e.g. with compensation for relative pin movement
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S464/00—Rotary shafts, gudgeons, housings, and flexible couplings for rotary shafts
- Y10S464/901—Rapid attachment or release
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pivots And Pivotal Connections (AREA)
- Percussive Tools And Related Accessories (AREA)
- Joints Allowing Movement (AREA)
- Earth Drilling (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Jigs For Machine Tools (AREA)
Abstract
Description
Claims (14)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/326,662 | 2002-12-19 | ||
US10/326,662 US6869366B2 (en) | 2002-12-19 | 2002-12-19 | Universal joint |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1742167A true CN1742167A (zh) | 2006-03-01 |
CN100449164C CN100449164C (zh) | 2009-01-07 |
Family
ID=32594078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2003801090791A Expired - Lifetime CN100449164C (zh) | 2002-12-19 | 2003-12-18 | 万向接头 |
Country Status (9)
Country | Link |
---|---|
US (2) | US6869366B2 (zh) |
EP (2) | EP1832768A3 (zh) |
CN (1) | CN100449164C (zh) |
AT (1) | ATE374319T1 (zh) |
AU (1) | AU2003297368A1 (zh) |
CA (4) | CA2509950C (zh) |
DE (1) | DE60316601T2 (zh) |
MX (1) | MXPA05006684A (zh) |
WO (1) | WO2004057199A2 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114060417A (zh) * | 2020-07-31 | 2022-02-18 | 张季丰 | 工具用的万向接头 |
CN114650956A (zh) * | 2019-11-04 | 2022-06-21 | 莱特拉姆有限责任公司 | 用于轴组件的锁定保持环 |
Families Citing this family (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL159083A0 (en) * | 2003-11-27 | 2004-05-12 | Mag Eh Ltd | Joint for the transmission of rotational motion |
US20050119056A1 (en) * | 2003-12-01 | 2005-06-02 | Chien Shih L. | Universal connector structure |
GB2427254A (en) * | 2005-06-15 | 2006-12-20 | Cnh Belgium Nv | Final drive for an agricultural vehicle |
US7942426B2 (en) * | 2006-07-12 | 2011-05-17 | Black & Decker Inc. | Pivotal/rigid accessories for power and hand tools |
US20080085151A1 (en) * | 2006-10-04 | 2008-04-10 | Pazdirek Jiri V | Light weight ball joint |
US20080128534A1 (en) * | 2006-11-30 | 2008-06-05 | Mcleod David J | Spray pump system and coupling apparatus |
JP4498407B2 (ja) | 2006-12-22 | 2010-07-07 | キヤノン株式会社 | プロセスカートリッジ、電子写真画像形成装置、及び、電子写真感光体ドラムユニット |
JP4948382B2 (ja) | 2006-12-22 | 2012-06-06 | キヤノン株式会社 | 感光ドラム取り付け用カップリング部材 |
JP5311854B2 (ja) | 2007-03-23 | 2013-10-09 | キヤノン株式会社 | 電子写真画像形成装置、現像装置、及び、カップリング部材 |
JP5189409B2 (ja) * | 2008-05-20 | 2013-04-24 | 株式会社プロス | 工具用ソケット |
JP5306050B2 (ja) | 2008-06-20 | 2013-10-02 | キヤノン株式会社 | カートリッジ、カップリング部材の取り付け方法、及び、カップリング部材の取り外し方法 |
US7963855B2 (en) * | 2008-11-12 | 2011-06-21 | Nike, Inc. | Releasable connections for golf club heads and shafts |
ES2368635B1 (es) * | 2009-04-16 | 2012-09-25 | Ramón Farre Berga | Estructura de acoplamiento entre cabeza de tornillo y herramienta de apriete. |
DE102009018392A1 (de) * | 2009-04-22 | 2010-10-28 | The Gleason Works | Anordnung zur Verbindung eines Werkzeugrads und einer Werkzeugaufnahme |
US20100294440A1 (en) * | 2009-05-22 | 2010-11-25 | Mechoshade Systems, Inc. | Multi-planar shade system and method |
US8096212B2 (en) * | 2009-10-13 | 2012-01-17 | Cheng-Wei Su | Two-section tool joint |
TWI395643B (zh) * | 2010-01-28 | 2013-05-11 | Cheng Chia Peng | 可更換不同工具組件之萬向接頭(二) |
US8650992B2 (en) * | 2010-02-16 | 2014-02-18 | Milwaukee Electric Tool Corporation | Driver accessory |
CN101782113A (zh) * | 2010-03-18 | 2010-07-21 | 刘善华 | 低速联轴器 |
TW201136717A (en) | 2010-04-19 | 2011-11-01 | Yuan Li Hsing Ind Co Ltd | Universal joint |
US8292150B2 (en) | 2010-11-02 | 2012-10-23 | Tyco Healthcare Group Lp | Adapter for powered surgical devices |
US9469017B2 (en) | 2014-01-31 | 2016-10-18 | Ingersoll-Rand Company | One-piece power socket for an impact tool |
US9566692B2 (en) * | 2011-04-05 | 2017-02-14 | Ingersoll-Rand Company | Rotary impact device |
US9463557B2 (en) * | 2014-01-31 | 2016-10-11 | Ingersoll-Rand Company | Power socket for an impact tool |
US10427277B2 (en) | 2011-04-05 | 2019-10-01 | Ingersoll-Rand Company | Impact wrench having dynamically tuned drive components and method thereof |
TWI397456B (zh) * | 2011-06-17 | 2013-06-01 | Peng Cheng Chia | 具閉鎖定位結構之萬向接頭 |
TW201307002A (zh) * | 2011-08-08 | 2013-02-16 | Hui-Feng Huang | 萬向扳手結構 |
US20140018816A1 (en) | 2012-07-12 | 2014-01-16 | Synthes Usa, Llc | Torque transmitting ball joint driver having a rigid fixation mechanism |
ITUD20120147A1 (it) * | 2012-08-29 | 2014-03-01 | Giovanni Costantino | Dispositivo e metodo di asciugatura per una macchina asciugatrice per indumenti |
TW201417964A (zh) * | 2012-11-09 | 2014-05-16 | Honiton Ind Inc | 萬向接頭結構 |
JP6244806B2 (ja) | 2013-10-17 | 2017-12-13 | セイコーエプソン株式会社 | 放電ランプ点灯装置、放電ランプ点灯方法及びプロジェクター |
US11806843B2 (en) | 2013-11-15 | 2023-11-07 | Snap-On Incorporated | Socket drive improvement |
US9718170B2 (en) * | 2013-11-15 | 2017-08-01 | Snap-On Incorporated | Socket drive improvement |
US20150165605A1 (en) * | 2013-12-18 | 2015-06-18 | Shwu-Ruu Chern | Universal connector unit |
TWI483817B (zh) * | 2014-08-08 | 2015-05-11 | Yuan Li Hsing Ind Co Ltd | 可更換驅動頭之工具及其套組 |
US20170184149A1 (en) * | 2015-12-29 | 2017-06-29 | Leo D. Bernstein & Sons, Inc. | Auto-locking ball joint |
TWI603815B (zh) * | 2016-04-13 | 2017-11-01 | 優鋼機械股份有限公司 | 旋轉式緊固裝置 |
DE102016221088A1 (de) * | 2016-10-26 | 2018-04-26 | Bayerische Motoren Werke Aktiengesellschaft | Winkelausgleichsvorrichtung für ein Werkzeug |
TWI654053B (zh) | 2017-08-14 | 2019-03-21 | 鴻安國際興業有限公司 | 具有萬向扭轉結構之驅動工具 |
US11723322B2 (en) * | 2020-06-05 | 2023-08-15 | Theodore George Santiesteban | Dynamic reversible multi-cross section universal modular driveline coupler |
US11905764B1 (en) | 2020-12-09 | 2024-02-20 | IBEX Drilling Solutions, Inc. | Coupling with enhanced torsional, fatigue strength, and wear resistance |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US442710A (en) * | 1890-12-16 | Leonardo mckeel marsh | ||
US741106A (en) * | 1903-04-27 | 1903-10-13 | Samuel M Burdick | Flexible shaft. |
US1111645A (en) * | 1913-02-19 | 1914-09-22 | Wallace Chadwick | Universal joint. |
GB235081A (en) * | 1924-11-07 | 1925-06-11 | Walter Barnett | Improvements in universal joints |
US2441347A (en) | 1940-05-11 | 1948-05-11 | Borg Warner | Universal joint |
DE1172488B (de) * | 1958-07-05 | 1964-06-18 | Tacke K G F | Kardanische Zahnkupplung |
US3222096A (en) * | 1963-04-15 | 1965-12-07 | Skil Corp | Rotary tool spindle |
US3279216A (en) * | 1965-01-06 | 1966-10-18 | Bunting Brass & Bronze Co | Misalignment coupling |
US4141225A (en) * | 1977-02-10 | 1979-02-27 | The United States Of America As Represented By The Secretary Of The Interior | Articulated, flexible shaft assembly with axially lockable universal joint |
US4188801A (en) | 1978-07-03 | 1980-02-19 | Ingersoll-Rand Company | Universal joint |
US4312193A (en) * | 1979-11-07 | 1982-01-26 | The Gates Rubber Company | Torque transfer device for flexible shaft couplings |
US4753626A (en) * | 1985-02-22 | 1988-06-28 | Gkn Automotive Components Inc. | Constant velocity universal joint and apparatus embodying the same |
DE8524285U1 (de) | 1985-08-24 | 1985-10-03 | Taubert, Hubert, Dipl.-Ing., 5450 Neuwied | Gelenkverbindung zwischen zwei Wellen |
US4818157A (en) * | 1986-12-31 | 1989-04-04 | James E. Scapillato | Quick-change adapter and tools for use with the adapter |
EP0362381A4 (en) * | 1988-02-19 | 1990-09-05 | Vsesojuzny Zaochny Politekhnichesky Institut | Toothed clutch |
US5007880A (en) * | 1990-05-09 | 1991-04-16 | Walker Stanley L | Bevel splined articulated joint |
US5291809A (en) * | 1992-03-02 | 1994-03-08 | Fox Iii Leonard J | Locking adapter for socket wrench |
US5351586A (en) * | 1993-04-08 | 1994-10-04 | G. Lyle Habermehl | Screwdriver replacement bit assembly |
US5527220A (en) * | 1994-03-23 | 1996-06-18 | Halliburton Company | Articulatable joint with multi-faceted ball and socket |
US5851151A (en) | 1995-03-23 | 1998-12-22 | Stanley Mechanics Tools | Pinless impact universal joint |
DE19903173B4 (de) * | 1998-04-06 | 2005-06-02 | Daimlerchrysler Ag | Aus mehreren standardisierten Teilen zusammengesetzter Schraubenschlüssel für schlecht zugängliche Verschraubungsstellen |
US6152826A (en) | 1998-04-29 | 2000-11-28 | Hand Tool Design Corporation | Impact universal joint |
US6659997B1 (en) * | 1999-11-26 | 2003-12-09 | Sulzer Orthopedics Ltd. | Operating tool |
US6582151B2 (en) * | 2001-01-11 | 2003-06-24 | Visteon Global Technologies, Inc. | Driving axle assembly |
US6709234B2 (en) * | 2001-08-31 | 2004-03-23 | Pyrotek, Inc. | Impeller shaft assembly system |
TW509129U (en) * | 2001-11-28 | 2002-11-01 | Hou-Fei Hu | Fastening device for tool |
US20040214646A1 (en) * | 2003-04-28 | 2004-10-28 | Chiou Li Jiun | Rotatable connector |
-
2002
- 2002-12-19 US US10/326,662 patent/US6869366B2/en not_active Expired - Lifetime
-
2003
- 2003-12-18 DE DE60316601T patent/DE60316601T2/de not_active Expired - Fee Related
- 2003-12-18 CA CA002509950A patent/CA2509950C/en not_active Expired - Lifetime
- 2003-12-18 EP EP07011946A patent/EP1832768A3/en not_active Withdrawn
- 2003-12-18 EP EP03813775A patent/EP1573216B1/en not_active Expired - Lifetime
- 2003-12-18 AT AT03813775T patent/ATE374319T1/de not_active IP Right Cessation
- 2003-12-18 CA CA3011486A patent/CA3011486A1/en not_active Abandoned
- 2003-12-18 CA CA2883239A patent/CA2883239C/en not_active Expired - Lifetime
- 2003-12-18 WO PCT/US2003/040517 patent/WO2004057199A2/en active IP Right Grant
- 2003-12-18 CN CNB2003801090791A patent/CN100449164C/zh not_active Expired - Lifetime
- 2003-12-18 MX MXPA05006684A patent/MXPA05006684A/es active IP Right Grant
- 2003-12-18 CA CA2685018A patent/CA2685018C/en not_active Expired - Lifetime
- 2003-12-18 AU AU2003297368A patent/AU2003297368A1/en not_active Abandoned
-
2005
- 2005-02-23 US US11/064,488 patent/US7153214B2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114650956A (zh) * | 2019-11-04 | 2022-06-21 | 莱特拉姆有限责任公司 | 用于轴组件的锁定保持环 |
CN114060417A (zh) * | 2020-07-31 | 2022-02-18 | 张季丰 | 工具用的万向接头 |
Also Published As
Publication number | Publication date |
---|---|
ATE374319T1 (de) | 2007-10-15 |
DE60316601T2 (de) | 2008-07-17 |
CA2685018C (en) | 2015-03-17 |
CA2509950C (en) | 2010-02-02 |
WO2004057199A2 (en) | 2004-07-08 |
AU2003297368A1 (en) | 2004-07-14 |
EP1573216B1 (en) | 2007-09-26 |
EP1573216A2 (en) | 2005-09-14 |
WO2004057199A3 (en) | 2005-02-17 |
CA2883239C (en) | 2018-11-27 |
US6869366B2 (en) | 2005-03-22 |
EP1832768A2 (en) | 2007-09-12 |
CA2509950A1 (en) | 2004-07-08 |
CA3011486A1 (en) | 2004-07-08 |
MXPA05006684A (es) | 2005-12-14 |
CA2883239A1 (en) | 2004-07-08 |
AU2003297368A8 (en) | 2004-07-14 |
CN100449164C (zh) | 2009-01-07 |
US20040121845A1 (en) | 2004-06-24 |
US20050143179A1 (en) | 2005-06-30 |
DE60316601D1 (de) | 2007-11-08 |
EP1832768A3 (en) | 2007-11-28 |
US7153214B2 (en) | 2006-12-26 |
CA2685018A1 (en) | 2004-07-08 |
EP1573216A4 (en) | 2006-05-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: COOPER BRANDS, INC. Free format text: FORMER OWNER: HAND TOOL DESIGN CORP. Effective date: 20150306 |
|
C41 | Transfer of patent application or patent right or utility model | ||
C56 | Change in the name or address of the patentee |
Owner name: APEX BRANDS CORP. Free format text: FORMER NAME: COOPER BRANDS, INC. |
|
CP03 | Change of name, title or address |
Address after: American Maryland Patentee after: APEX BRANDS, Inc. Address before: Delaware Patentee before: Cooper label AG |
|
TR01 | Transfer of patent right |
Effective date of registration: 20150306 Address after: Delaware Patentee after: Cooper label AG Address before: Delaware Patentee before: Hand Tool Design Corp. |
|
CX01 | Expiry of patent term |
Granted publication date: 20090107 |
|
CX01 | Expiry of patent term |