Granted Patent
Utility
US 4,789,987 · App. 07/068,981
Automatic modulation control apparatus
Inventor:
George D. Fraser
Patented Case
View Patent ↗
Granted: Dec 6, 1988
Filed: Jul 1, 1987
Inventor
George D. Fraser
Assignee (at issue)
Rockwell International 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.