Granted Patent
Utility
US 4,694,197 · App. 06/816,283
Control signal generator
Inventor:
David L. Sprague
Patented Case
View Patent ↗
Granted: Sep 15, 1987
Filed: Jan 6, 1986
Inventor
David L. Sprague
Assignee (at issue)
RCA 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.