Granted Patent
Utility
US 4,389,775 · App. 06/286,052
Belt buckle and knife
Inventor:
Walter W. Collins
Patented Case
View Patent ↗
Granted: Jun 28, 1983
Filed: Jul 22, 1981
Inventor
Walter W. Collins
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.