Granted Patent
Utility
US 4,412,161 · App. 06/257,489
Digital control of servo circuit
Inventor:
David T. Cornaby
Patented Case
View Patent ↗
Granted: Oct 25, 1983
Filed: Apr 24, 1981
Inventor
David T. Cornaby
Assignee (at issue)
IO-Mega Holding 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.