Granted Patent
Utility
US 4,553,736 · App. 06/602,875
Pneumatic plunger-type valve
Inventor:
Patrick R. Dellario
Patented Case
View Patent ↗
Granted: Nov 19, 1985
Filed: May 30, 1984
Inventor
Patrick R. Dellario
Assignee (at issue)
American Standard 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.