Granted Patent
Utility
US 4,534,222 · App. 06/521,001
Fiber-optic seismic sensor
Inventors:
George W. Finch, Eric Udd
Patented Case
View Patent ↗
Granted: Aug 13, 1985
Filed: Aug 8, 1983
Inventors
George W. Finch
Eric Udd
Assignee (at issue)
McDonnell Douglas 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.