Download Docs
Export

CALL RECOVERY METHOD AND APPARATUS FOR AN ATTENDANT TELEPHONE SET

09/239,435 | U.S. Patent Application

Interested in this case?

Request a Demo Track this case, and find millions of cases like it, let us show you how.
Location FILE REPOSITORY (FRANCONIA)
Filed Jan. 28, 1999
Examiner REXFORD N BARNIE
Class 379
Art Group 2743
Patent No. 6,442,261
Case Type Utility - 379/142000
Status Patented Case
Last Updated: 4 years, 1 month ago
Date # Transaction