Granted Patent
Utility
US 4,753,645 · App. 07/097,990
Perineal shield
Inventor:
Russell L. Johnson
Patented Case
View Patent ↗
Granted: Jun 28, 1988
Filed: Sep 17, 1987
Inventor
Russell L. Johnson
Assignee (at issue)
Weyerhaeuser NR 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.