Granted Patent
Utility
US 4,717,661 · App. 06/820,354
Biological indicator for sterilization processes
Inventors:
Patrick J. McCormick, John Scoville
Patented Case
View Patent ↗
Granted: Jan 5, 1988
Filed: Jan 21, 1986
Inventors
Patrick J. McCormick
John Scoville
Assignee (at issue)
Castle, Inc.
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.