Granted Patent
Utility
US 5,337,343 · App. 07/877,526
Headset bridge for operating multiple communication devices
Inventor:
David R. Stickney
Patented Case
View Patent ↗
Granted: Aug 9, 1994
Filed: May 10, 1992
Inventor
David R. Stickney
Assignee (at issue)
United Telephone Company of Ohio
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.