Granted Patent
Utility
US 4,623,033 · App. 06/499,055
Air release in seismic source air gun
Inventor:
Earnest R. Harrison
Patented Case
View Patent ↗
Granted: Nov 18, 1986
Filed: May 27, 1983
Inventor
Earnest R. Harrison
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.