Granted Patent
Utility
US 5,639,062 · App. 08/507,058
Modified heel valve construction
Inventors:
Christopher R. Irgens, Francis A. McGinnity
Patented Case
View Patent ↗
Granted: Jun 17, 1997
Filed: Jul 25, 1995
Inventors
Christopher R. Irgens
Francis A. McGinnity
Assignee (at issue)
Outboard Marine 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.