Granted Patent
Utility
US 4,674,500 · App. 06/780,895
Sheathed knife instrument
Inventor:
Allen H. DeSatnick
Patented Case
View Patent ↗
Granted: Jun 23, 1987
Filed: Sep 27, 1985
Inventor
Allen H. DeSatnick
Assignee (at issue)
Minnesota Mining and Manufacturing 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.