Granted Patent
Utility
US 4,814,887 · App. 07/197,616
Automatic frequency control
Inventors:
Daniel Marz, John Schilling
Patented Case
View Patent ↗
Granted: Mar 21, 1989
Filed: May 23, 1988
Inventors
Daniel Marz
John Schilling
Assignee (at issue)
General Instrument 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.