Granted Patent
Utility
US 4,726,650 · App. 06/780,884
Optical accelerometer
Inventor:
David Grissom
Patented Case
View Patent ↗
Granted: Feb 23, 1988
Filed: Sep 27, 1985
Inventor
David Grissom
Assignee (at issue)
Western Atlas International, 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.