Granted Patent
Utility
US 5,149,054 · App. 07/622,713
Reinforced polymer valve
Inventors:
David P. Passerell, Stan Skrbis
Patented Case
View Patent ↗
Granted: Sep 22, 1992
Filed: Dec 5, 1990
Inventors
David P. Passerell
Stan Skrbis
Assignee (at issue)
Perfection Holdings LLC
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.