Granted Patent
Utility
US 3,938,519 · App. 05/445,849
Medical liquid container with a toggle film leak tester and method of leak testing with same
Inventor:
Charles J. McPhee
Patented Case
View Patent ↗
Granted: Feb 17, 1976
Filed: Feb 26, 1974
Inventor
Charles J. McPhee
Assignee (at issue)
American Hospital Supply Corp.
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.