Granted Patent
Utility
US 4,302,886 · App. 06/088,959
Gyroscopic directional surveying instrument
Inventor:
George Starr
Patented Case
View Patent ↗
Granted: Dec 1, 1981
Filed: Oct 29, 1979
Inventor
George Starr
Assignee (at issue)
Robert L. Fournet
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.