Granted Patent
Utility
US 4,396,919 · App. 06/251,402
Differential drive pedestal gimbal
Inventor:
John M. Speicher
Patented Case
View Patent ↗
Granted: Aug 2, 1983
Filed: Apr 6, 1981
Inventor
John M. Speicher
Assignee (at issue)
General Dynamics Corp., Pomona Division
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.