Granted Patent
Utility
US 5,812,604 · App. 08/680,821
Constant envelope continuous phase frequency shift key modulation apparatus and method at radio frequencies
Inventors:
Charles A. Herbst, Larry J. Fruit, James Allan Wilkerson, Jr.
Patented Case
View Patent ↗
Granted: Sep 22, 1998
Filed: Jul 16, 1996
Inventors
Charles A. Herbst
Larry J. Fruit
James Allan Wilkerson, Jr.
Assignee (at issue)
Scientific-Atlanta, Inc.
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.