Granted Patent
Utility
US 6,008,693 · App. 09/030,485
FM-sound demodulator for TV sound signals and method of detecting sound carriers
Inventor:
Burkhard Heinke
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Feb 25, 1998
Inventor
Burkhard Heinke
Assignee (at issue)
U.S. Philips 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.