Granted Patent
Utility
US 4,370,653 · App. 06/170,998
Phase comparator system
Inventor:
Albert T. Crowley
Patented Case
View Patent ↗
Granted: Jan 25, 1983
Filed: Jul 21, 1980
Inventor
Albert T. Crowley
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.