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Heidi N. Cline, Karsten Heidecke, Bjoern Thiemann, Michael Wiedecke |
2021-08-10 |
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Electronic control system for a tubular handling tool |
Michael Wiedecke, Bjoern Thiemann, Karsten Heidecke, Martin Liess, Martin Helms |
2020-10-13 |
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Electronic control system for a tubular handling tool |
Michael Wiedecke, Bjoern Thiemann, Karsten Heidecke, Martin Liess, Martin Helms |
2020-06-30 |
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Electronic control system for a tubular handling tool |
Michael Wiedecke, Bjoern Thiemann, Karsten Heidecke, Martin Liess, Martin Helms |
2019-04-09 |
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Electronic control system for a tubular handling tool |
Michael Wiedecke, Bjoern Thiemann, Karsten Heidecke, Martin Liess, Martin Helms |
2016-08-02 |
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Tubular handling apparatus |
Martin Liess, Reinhard Grosch, Thomas Kotschy, Andreas Carlsson |
2014-06-17 |
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Tubular handling apparatus |
Martin Liess, Reinhard Grosch, Thomas Kotschy, Andreas Carlsson |
2013-02-05 |
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Remotely operated single joint elevator |
Bernd-Georg Pietras, Kevin Wood, Karsten Heidecke, Martin Helms, Martin Liess |
2012-07-10 |
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Fill up and circulation tool and mudsaver valve |
Delaney Michael Olstad, Russell W. Thompson, Russell L Morgan, Jim Hollingsworth, Doyle Frederic Boutwell, Jr. +2 more |
2012-03-27 |