Granted Patent
Utility
US 4,294,804 · App. 06/162,812
Pressure responsive conditioning control gas sterilization
Inventor:
Walter J. Baran, Jr.
Patented Case
View Patent ↗
Granted: Oct 13, 1981
Filed: Jun 25, 1980
Inventor
Walter J. Baran, Jr.
Assignee (at issue)
American Sterilizer 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.