Granted Patent
Utility
US 4,776,776 · App. 07/088,784
Small pump valve plate assembly
Inventor:
David Jones
Patented Case
View Patent ↗
Granted: Oct 11, 1988
Filed: Aug 24, 1987
Inventor
David Jones
Assignee (at issue)
The DeVilbiss Company
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.