Patent Assignment
Reel/Frame 003889/0220
Assignment of Assignors Interest.
Recorded: 1981-05-18
Pages: 2
Assignee
BELL TELEPHONE LABORATORIES, INCORPORATED, A CORP. OF NY.
600 MOUNTAIN AVE., MURRAY HILL, NEW JERSEY, 07974
Covered Property
(1)
Communication System Parkhold Conferencing
Patent:
4,424,418 →
Application:
06/264,569 →
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.