Patent Assignment
Reel/Frame 004181/0921
Assignment of Assignors Interest.
Recorded: 1983-07-15
Pages: 1
Assignor
FISHER, DAVID A.
Executed: 1983-07-08
Assignee
INTERNATIONAL STANDARD ELECTRIC CORPORATION OF DE
320 PARK AVENUE, NEW YORK, NEW YORK, 10022
Covered Property
(1)
Echo Canceller
Patent:
4,539,675 →
Application:
06/522,378 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Dec 7, 1993
From: STC LIMITED
To: NORTHERN TELECOM LIMITED
Reel/Frame 006796/0981 →
Change of Name
Dec 23, 1999
From: NORTHERN TELECOM LIMITED
To: NORTEL NETWORKS CORPORATION
Reel/Frame 010567/0001 →
Change of Name
Aug 30, 2000
From: NORTEL NETWORKS CORPORATION
To: NORTEL NETWORKS LIMITED
Reel/Frame 011195/0706 →