Granted Patent
Utility
US 4,740,144 · App. 07/045,934
Reversible radial vane air motor
Inventor:
Paul A. Biek
Patented Case
View Patent ↗
Granted: Apr 26, 1988
Filed: May 4, 1987
Inventor
Paul A. Biek
Assignee (at issue)
Dresser Industries, Inc.
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.