Granted Patent
Utility
US 4,736,644 · App. 06/819,566
Adjustable gear support bracket
Inventor:
Chesley R. Howell
Patented Case
View Patent ↗
Granted: Apr 12, 1988
Filed: Jan 17, 1986
Inventor
Chesley R. Howell
Assignee (at issue)
Schlumberger Canada Limited
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.