Granted Patent
Utility
US 6,573,782 · App. 09/769,941
Sigma delta FM ratio detector
Inventors:
Raymond Louis Barrett, Jr., Barry W. Herold, Scott Robert Humphreys
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Jan 26, 2001
Inventors
Raymond Louis Barrett, Jr.
Barry W. Herold
Scott Robert Humphreys
Assignee (at issue)
Motorola, 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.