E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/03 (2006.01) E21B 33/04 (2006.01) E21B 33/06 (2006.01)
Patent
CA 2636949
An assembly for connecting a drilling adapter to a wellhead comprising external threads on an end portion thereof.
Borak Eugene A. Jr.
Dach Anton J. Jr.
Huynh Vanson
Finlayson & Singlehurst
Vetco Gray Inc.
LandOfFree
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