Granted Patent
Utility
US 4,291,122 · App. 06/178,096
Biological indicator for sterilization processes
Inventor:
Paula A. Orelski
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Aug 14, 1980
Inventor
Paula A. Orelski
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.