Granted Patent
Utility
US 4,680,741 · App. 06/913,558
Method and apparatus for seismic exploration using non-linear sweeps
Inventors:
C. Ernest Wales, Mitchell F. Peterson
Patented Case
View Patent ↗
Granted: Jul 14, 1987
Filed: Sep 29, 1986
Inventors
C. Ernest Wales
Mitchell F. Peterson
Assignee (at issue)
Geosource, Inc.
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.