Granted Patent
Utility
US 4,293,937 · App. 06/065,476
Borehole acoustic telemetry system
Inventors:
H. Eugene Sharp, Octavio A. Vela, Mils A. Smither
Patented Case
View Patent ↗
Granted: Oct 6, 1981
Filed: Aug 10, 1979
Inventors
H. Eugene Sharp
Octavio A. Vela
Mils A. Smither
Assignee (at issue)
Sperry-Sun, 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.