Patent Assignment
Reel/Frame 003939/0986
Assignment of Assignors Interest.
Recorded: 1981-10-13
Pages: 2
Assignee
BELL-NORTHERN RESEARCH LTD.
P.O. BOX 3511, STATION C., OTTAWA, ONTARIO, K1Y 4H7, CANADA
Covered Property
(1)
Echo Cancellation Using Transversal Filters
Patent:
4,425,483 →
Application:
06/310,501 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Oct 13, 1981
From: BELL-NORTHERN RESEARCH LTD.,
To: NORTHERN TELECOM LIMITED
Reel/Frame 003939/0988 →
Release of Security Interest
Jan 16, 1998
From: CARR, ALAN G.
To: THERION BIOLOGICS CORPORATION
Reel/Frame 008940/0525 →
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 →