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Inventor

DRZEWIECKI LOPEK

CA7 patents
⚠️ This page may combine multiple inventors who share the name “DRZEWIECKI LOPEK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NAT OILWELL LP

4 patents
US7121166B2Oct 17, 2006

Power tong assembly

NAT OILWELL LP48 citations90
US6910402B2Jun 28, 2005

Pipe spinner

NAT OILWELL LP28 citations90
US7523694B2Apr 28, 2009

Cylinder liner preload system

NAT OILWELL LP9 citations79
US7111676B2Sep 26, 2006

Pipe centering device

NAT OILWELL LP7 citations71

NAT OILWELL VARCO NORWAY AS

1 patent
US9428972B2Aug 30, 2016

Simultaneous clamp and torque drive

NAT OILWELL VARCO NORWAY AS3 citations69

NAT OILWELL VARCO LP

1 patent
US7594683B2Sep 29, 2009

Pipe elevator with rotating door

NAT OILWELL VARCO LP1 citations49

DRZEWIECKI LOPEK

1 patent
US8161846B2Apr 24, 2012

Apparatus and methods for spinning a pipe

DRZEWIECKI LOPEK0 citations42