Granted Patent
Utility
US 6,570,972 · App. 09/259,279
Telephony control mechanism
Inventor:
David Patterson
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Mar 1, 1999
Inventor
David Patterson
Assignee (at issue)
MICROSYSTEMS, INC.
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.