Granted Patent
Utility
US 5,749,394 · App. 08/728,496
Check valve including molded valve seat
Inventors:
Dennis A. Boehmer, Richard L. Gibson
Patented Case
View Patent ↗
Granted: May 12, 1998
Filed: Oct 9, 1996
Inventors
Dennis A. Boehmer
Richard L. Gibson
Assignee (at issue)
VERNAY LABORATORIES, 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.