Granted Patent
Utility
US 6,161,433 · App. 09/419,838
Fiber optic geophone
Inventor:
Louis W. Erath
Patented Case
View Patent ↗
Granted: Dec 19, 2000
Filed: Oct 15, 1999
Inventor
Louis W. Erath
Assignee (at issue)
GeoSensor Corporation
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.