IP Library › Granted Patent US 4,873,718
Granted Patent Utility
US 4,873,718 · App. 07/275,659

Feature telephone integration device

Inventors: Paul M. Barnett, Douglas A. Welch, Duncan J. S. MacMillan, Jr.
Patented Case View Patent ↗
Granted: Oct 10, 1989 Filed: Nov 22, 1988
Inventors
Paul M. Barnett
Douglas A. Welch
Duncan J. S. MacMillan, Jr.
Assignee (at issue)
Octel Communications Corporation

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Quick Facts
Patent No.
US 4,873,718
App. No.
07/275,659
Filed
1988-11-22
Granted
1989-10-10
Kind
A