IP Library Granted Patent US 6,754,337
Granted Patent Utility
US 6,754,337 · Confirmation No. 2475

TELEPHONE HAVING FOUR VAD CIRCUITS

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Quick Facts
Patent No.
US 6,754,337
App. No.
10/057,160
Filed
2002-01-25
Granted
2004-06-22
Pub. No.
US20030142813A1
Art Unit
2644
PTA
-18 days