Granted Patent
Utility
US 4,676,337 · App. 06/771,803
Seismic vibrator baseplate
Inventor:
Dallas J. Martin
Patented Case
View Patent ↗
Granted: Jun 30, 1987
Filed: Sep 3, 1985
Inventor
Dallas J. Martin
Assignee (at issue)
Western Geophysical Company of America
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.