Granted Patent
Utility
US 5,495,901 · App. 08/395,995
Surface adjustable adjustable bent housing
Inventors:
Raymond D. Livingstone, David Kutinsky, Murray David Wilson, Winston Smith
Patented Case
View Patent ↗
Granted: Mar 5, 1996
Filed: Feb 28, 1995
Inventors
Raymond D. Livingstone
David Kutinsky
Murray David Wilson
Winston Smith
Assignee (at issue)
Canadian Downhole Drill Systems
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.