Granted Patent
Utility
US 4,489,422 · App. 06/332,831
Freeze clock circuit
Inventors:
Joseph P. Paradise, Donald J. Derkach
Patented Case
View Patent ↗
Granted: Dec 18, 1984
Filed: Dec 21, 1981
Inventors
Joseph P. Paradise
Donald J. Derkach
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.