Granted Patent
Utility
US 5,230,010 · App. 07/588,656
Fractional rate modulation
Inventors:
William L. Betts, Gordon Bremer
Patented Case
View Patent ↗
Granted: Jul 20, 1993
Filed: Sep 26, 1990
Inventors
William L. Betts
Gordon Bremer
Assignee (at issue)
American Telephone and Telegraph, Co.
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.