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1969-12-30 |
1971-07-15 |
Karl Dr Glehn |
Wegfall der Drehung und Aussparung der Ringscheibe;Automatische Sicherung einer Sohlegleichheit
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AR206593A1
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1972-03-31 |
1976-08-06 |
Kainan Steel Tube Co |
Estructura de juntas de acoplamiento para tubos roscados particularmente tuberias para pozos petroliferos
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JPS50119013U
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1974-03-13 |
1975-09-29 |
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USRE30647E
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1975-04-23 |
1981-06-16 |
Hydril Company |
Tubular connection
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GB1583038A
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1976-04-22 |
1981-01-21 |
Hydril Co |
Screw thread connection for pin and box pipe joints
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JPS52133115A
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1976-04-30 |
1977-11-08 |
Sumitomo Metal Ind Ltd |
Screw joint of steel pipe
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FR2359353A1
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1976-07-23 |
1978-02-17 |
Vallourec |
Joint pour tubes, notamment pour tubes petroliers
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1976-09-14 |
1979-05-31 |
Mannesmann Ag, 4000 Duesseldorf |
Gewindeverbindung für ölfeldrohre
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JPS54171519U
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1978-05-24 |
1979-12-04 |
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1980-04-25 |
1983-05-24 |
Republic Steel Corporation |
Threaded joint for well casing and tubing
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1980-09-29 |
1985-08-27 |
Hydril Company |
Joint and joint components for pipe sections subjected to axial compression loads
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1981-12-17 |
1985-10-22 |
Hughes Tool Company - Usa |
Tool joint with internal/external make-up shoulders
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JPS58142475U
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1982-03-23 |
1983-09-26 |
日本鋼管株式会社 |
油井管用ネジ継手
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1982-05-19 |
1987-11-17 |
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Coupling for tubing or casing and method of assembly
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1982-05-19 |
1993-11-23 |
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1982-07-23 |
1987-02-17 |
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1982-09-20 |
1985-04-02 |
Lone Star Steel Company |
Tubular connection
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1983-01-03 |
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1983-04-29 |
1993-12-07 |
The Hydril Company |
Tubular connection
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1983-04-29 |
1990-01-16 |
Baker Hughes Incorporated |
Tubular coupling with ventable seal
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1983-10-05 |
1986-05-13 |
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Threaded pipe connection
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1983-12-23 |
1986-07-15 |
Interlock Technologies Corporation |
Tubular connection having a parallel chevron thread
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1983-12-23 |
1986-07-15 |
Interlock Technologies Corporation |
Tubular connection having a chevron wedge thread
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1984-06-04 |
1984-07-11 |
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Pipe connectors
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1984-10-02 |
1987-12-15 |
Hydril Company |
Metal-to-metal wedge thread coupling connector
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1985-04-24 |
1991-01-29 |
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1985-09-24 |
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Internally coated tubular system
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1987-05-12 |
1992-12-08 |
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Threaded joint for drill rod elements
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1991-05-09 |
1993-08-17 |
N.S. Pipe Technology, Inc. |
Coupling assembly
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1995-08-19 |
2001-01-23 |
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1997-02-21 |
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1998-07-29 |
2003-08-26 |
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1998-12-07 |
2009-10-20 |
Shell Oil Company |
Method of coupling a tubular member
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2008-04-15 |
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1998-11-16 |
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1998-12-07 |
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1998-12-07 |
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2000-09-15 |
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2000-09-25 |
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2000-10-02 |
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2004-06-15 |
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2001-11-12 |
2003-05-22 |
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2002-04-12 |
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2002-04-15 |
2006-04-26 |
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2002-12-20 |
2004-11-16 |
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Tubular members and threaded connections for casing drilling and method
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2003-01-22 |
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2003-01-27 |
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2007-10-04 |
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2007-01-30 |
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2003-06-13 |
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2003-09-05 |
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Expansion cone and system
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2006-09-12 |
Sandvik Intellectual Property |
Metod för sammanfogning av dispersionshärdande legering
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2004-05-05 |
2007-02-07 |
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Raccord filete pour applications liees a des champs de petrole
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2004-08-13 |
2006-02-23 |
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Dispositif d'expansion d'elements tubulaires
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2004-12-21 |
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Förfarande samt rörfog för hopfogning av komponenter som innefattar eller är gjort av ett material som är svårt att svetsa
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2007-03-21 |
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2007-11-30 |
2011-10-11 |
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Tool string threads
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2008-08-13 |
Tenaris Connections Ag |
Una union roscada de alta resistencia, preferentemente para tubos con recubrimiento interno.
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2007-06-22 |
2011-08-31 |
Tenaris Connections Aktiengesellschaft |
Joint fileté avec étanchéité énergisable
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2007-06-27 |
2011-01-20 |
Tenaris Connections Ag |
Gewindeverbindung mit unter Druck setzbarer Dichtung
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2007-07-16 |
2016-06-01 |
Tenaris Connections Limited |
Joint fileté avec bague d'étanchéité souple
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2007-08-24 |
2011-05-26 |
Tenaris Connections Ag |
Gewindeverbindungsstück mit hoher Radiallast und unterschiedlich behandelten Oberflächen
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2007-08-24 |
2010-10-14 |
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Verfahren zur Erhöhung der Ermüdungsbeständigkeit einer Schraubverbindung
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2008-02-29 |
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Tenaris Connections AG |
Raccord fileté avec bagues d'étanchéité souples améliorées
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2009-04-22 |
2010-10-27 |
Tenaris Connections Aktiengesellschaft |
Joint fileté pour tubes, tuyaux et similaires
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2012-05-16 |
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气密封螺纹接头
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2009-11-24 |
2020-09-30 |
Tenaris Connections B.V. |
Joint fileté étanche à des pressions internes et externes [extrêmement hautes]
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2010-03-25 |
2013-05-29 |
Tenaris Connections Limited |
Joint fileté avec bride de joint élastomère
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Tenaris Connections Ltd. |
Raccord de tuyau à paroi mince et méthode pour coupler un premier tuyau à un second tuyau
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2011-01-25 |
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双密封防腐注水井油管
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2013-01-11 |
2014-07-17 |
Tenaris Connections Limited |
Joint d'outil de tige de forage résistant au grippage et tige de forage correspondante
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Способ герметизации стесненной прокладкой
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2013-03-14 |
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High performance material for coiled tubing applications and the method of producing the same
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2013-04-08 |
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DALMINE S.p.A. |
Tuyaux en acier sans soudure trempé et revenu à paroi moyenne haute résistance et procédé de fabrication des tuyaux d'acier
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2013-04-08 |
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Tuyaux en acier sans soudure trempé et revenu à paroi lourde et procédé de fabrication des tuyaux d'acier
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2021-08-20 |
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Acoplamiento de tuberia con region deflectora de carga.
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2015-02-03 |
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Pipe connector
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Pipe connector
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Turbine case coupling
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一种管接件及其加工方法
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2015-10-21 |
2021-01-18 |
Nippon Steel Corp |
Threaded connection for steel pipe
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2021-09-21 |
Tenaris Coiled Tubes, Llc |
Method and system for manufacturing coiled tubing
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Method of manufacturing a coiled tubing string
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2023-12-14 |
Gb Connections Llc |
Coupled Connection for Tight Clearance Casing Strings in Oil and Gas Wells
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