Granted Patent
Utility
US 6,731,763 · App. 09/542,959
Audio A/D converter using frequency modulation
Inventor:
Paul W. Dent
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Apr 3, 2000
Inventor
Paul W. Dent
Assignee (at issue)
ERICSSON GMBH
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.