Granted Patent
Utility
US 4,446,999 · App. 06/322,590
Powder actuated tool safety guard retention
Inventors:
John Benson, Harold L. Hanel
Patented Case
View Patent ↗
Granted: May 8, 1984
Filed: Nov 18, 1981
Inventors
John Benson
Harold L. Hanel
Assignee (at issue)
International Telephone and Telegraph Corporation
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.