Granted Patent
Utility
US 4,223,258 · App. 06/021,381
Digitally controlled servo system
Inventor:
Garry T. Lacy
Patented Case
View Patent ↗
Granted: Sep 16, 1980
Filed: Mar 19, 1979
Inventor
Garry T. Lacy
Assignee (at issue)
General Dynamics 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.