Granted Patent
Utility
US 5,295,502 · App. 08/101,014
Non-refillable valve
Inventor:
Joseph A. Lane
Patented Case
View Patent ↗
Granted: Mar 22, 1994
Filed: Aug 3, 1993
Inventor
Joseph A. Lane
Assignee (at issue)
Amtrol, 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.