Granted Patent
Utility
US 4,791,617 · App. 07/071,510
Motion sensing device
Inventor:
Robert Seymour
Patented Case
View Patent ↗
Granted: Dec 13, 1988
Filed: Jul 9, 1987
Inventor
Robert Seymour
Assignee (at issue)
Geophysical Service, 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.