Granted Patent
Utility
US 4,079,660 · App. 05/702,065
Safety valve for piston type pneumatic powered motor
Inventor:
Frank E. Ives
Patented Case
View Patent ↗
Granted: Mar 21, 1978
Filed: Jul 2, 1976
Inventor
Frank E. Ives
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.