Granted Patent
Utility
US 4,356,012 · App. 06/142,194
Medical liquid container with filter vent
Inventor:
Jack H. Hofstetter
Patented Case
View Patent ↗
Granted: Oct 26, 1982
Filed: Apr 21, 1980
Inventor
Jack H. Hofstetter
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.