Granted Patent
Utility
US 5,930,308 · App. 08/614,501
Method and apparatus for detecting signaling tones in wide-band digitized cellular-telephone signals
Inventor:
Thomas R. Schmutz
Patented Case
View Patent ↗
Granted: Jul 27, 1999
Filed: Feb 1, 1996
Inventor
Thomas R. Schmutz
Assignee (at issue)
AIRNET COMMUNICATIONS 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.