Granted Patent
Utility
US 4,460,387 · App. 06/331,069
Discharge evacuation system
Inventors:
William R. Barron, Peter E. Zell
Patented Case
View Patent ↗
Granted: Jul 17, 1984
Filed: Dec 16, 1981
Inventors
William R. Barron
Peter E. Zell
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.