Granted Patent
Utility
US 4,294,321 · App. 06/125,118
Position sensing and display means
Inventors:
Harold Allen Wittlinger, Carmine P. Salerno
Patented Case
View Patent ↗
Granted: Oct 13, 1981
Filed: Feb 27, 1980
Inventors
Harold Allen Wittlinger
Carmine P. Salerno
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.