Granted Patent
Utility
US 4,752,072 · App. 06/944,731
Telescoping self-defense keychain
Inventor:
Kevin L. Parsons
Patented Case
View Patent ↗
Granted: Jun 21, 1988
Filed: Dec 22, 1986
Inventor
Kevin L. Parsons
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.