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NATIONAL OILWEL VARCO NORWAY AS

NATIONAL OILWEL VARCO NORWAY AS Patent applications
Patent application numberTitlePublished
20120104674HYDRAULIC CLAMPING DEVICE - A hydraulic clamping device comprises clamping piece supported in a structure. In addition, the clamping device comprises a hydraulic cylinder having a longitudinal axis and including a cylinder housing fixedly connected to the structure. Further, the clamping device comprises an intermediate piece axially disposed between the piston and the clamping piece. The hydraulic cylinder is adapted to exert a force along the longitudinal axis against the clamping piece.05-03-2012