Granted Patent
Utility
US 4,230,201 · App. 05/929,883
Air release control in seismic energy source air gun
Inventor:
Marvin G. Bays
Patented Case
View Patent ↗
Granted: Oct 28, 1980
Filed: Jul 31, 1978
Inventor
Marvin G. Bays
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.