Granted Patent
Utility
US 5,997,253 · App. 09/112,726
Adjustable pitch propeller
Inventor:
Richard J. Feehan
Patented Case
View Patent ↗
Granted: Dec 7, 1999
Filed: Jul 9, 1998
Inventor
Richard J. Feehan
Assignee (at issue)
Brunswick Corporation
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.