Patent Assignment
Reel/Frame 005980/0063
Assignment of Assignors Interest.
Recorded: 1991-12-31
Pages: 4
Assignee
AMERICAN TELEPHONE AND TELEGRAPH COMPANY A CORP. OF NEW YORK
550 MADISON AVENUE NEW YORK, NEW YORK 10022-3201
Covered Property
(1)
Method and Apparatus for Detecting Control Signals
Patent:
5,442,696 →
Application:
07/816,332 →
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.