Granted Patent
Utility
US 5,644,098 · App. 08/497,044
Tone signal generator for producing multioperator tone signals
Inventors:
Michael V. Jenkins, Salvador R. Bernadas, Qiujie Dong
Patented Case
View Patent ↗
Granted: Jul 1, 1997
Filed: Jun 30, 1995
Inventors
Michael V. Jenkins
Salvador R. Bernadas
Qiujie Dong
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.