Granted Patent
Utility
US 4,309,381 · App. 06/091,710
Establishing and ascertaining desired air removal in steam sterilization
Inventors:
Robert E. Chamberlain, Thomas G. Cook
Patented Case
View Patent ↗
Granted: Jan 5, 1982
Filed: Nov 6, 1979
Inventors
Robert E. Chamberlain
Thomas G. Cook
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.