Membership
Tour
Register
Log in
Douglas A. Welch
Follow
Person
San Jose, CA, US
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Feature telephone integration device
Patent number
4,873,718
Issue date
Oct 10, 1989
Octel Communications Corp.
Paul M. Barnett
H04 - ELECTRIC COMMUNICATION TECHNIQUE