Granted Patent
Utility
US 6,690,776 · App. 09/644,806
Communication on hold notifier
Inventor:
Charles F. Raasch
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Aug 23, 2000
Inventor
Charles F. Raasch
Assignee (at issue)
Conexant Systems, LLC
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.