Granted Patent
Utility
US 4,253,538 · App. 05/901,896
Broadband seismic energy source
Inventors:
Richard M. Weber, John W. Bedenbender
Patented Case
View Patent ↗
Granted: Mar 3, 1981
Filed: May 1, 1978
Inventors
Richard M. Weber
John W. Bedenbender
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.