Granted Patent
Utility
US 5,372,116 · App. 08/121,686
Combined pressure wave suppressor air/vapor purge and check valve
Inventor:
Leland L. Davis
Patented Case
View Patent ↗
Granted: Dec 13, 1994
Filed: Sep 15, 1993
Inventor
Leland L. Davis
Assignee (at issue)
Davco Manufacturing 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.