Granted Patent
Utility
US 5,698,805 · App. 08/528,031
Tone signal generator for producing multioperator tone signals
Inventors:
Charles D. Thompson, Salvador R. Bernadas, Michael V. Jenkins
Patented Case
View Patent ↗
Granted: Dec 16, 1997
Filed: Sep 14, 1995
Inventors
Charles D. Thompson
Salvador R. Bernadas
Michael V. Jenkins
Assignee (at issue)
Crystal Semiconductor Corp.
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.