Granted Patent
Utility
US 4,307,392 · App. 06/104,276
Digital display verification
Inventors:
Richard C. Loshbough, Edward G. Pryor
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Dec 17, 1979
Inventors
Richard C. Loshbough
Edward G. Pryor
Assignee (at issue)
Reliance Electric Limited
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.