Granted Patent
Utility
US 4,203,943 · App. 05/850,846
Method of biocidal sterilization using cyclic subatmospheric pressure conditioning
Inventors:
John R. Gillis, Frank E. Halleck
Patented Case
View Patent ↗
Granted: May 20, 1980
Filed: Nov 11, 1977
Inventors
John R. Gillis
Frank E. Halleck
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.