Granted Patent
Utility
US 4,932,672 · App. 07/296,990
Nonlethal hand grenade
Inventor:
Dennis J. Tippmann, Sr.
Patented Case
View Patent ↗
Granted: Jun 12, 1990
Filed: Jan 17, 1989
Inventor
Dennis J. Tippmann, Sr.
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.