Granted Patent
Utility
US 4,225,009 · App. 06/026,975
Internal air release control apparatus air gun
Inventors:
Earnest R. Harrison, Roy Johnston
Patented Case
View Patent ↗
Granted: Sep 30, 1980
Filed: Apr 4, 1979
Inventors
Earnest R. Harrison
Roy Johnston
Assignee (at issue)
Texas Instruments Incorporated
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.