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Patent Assignment Abstract of Title
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Total Assignments: 4
Patent #:
4683968
Issue Dt:
08/04/1987
Application #:
06771901
Filing Dt:
09/03/1985
Inventors:
MATTHEW A. APPELBAUM, DAVID B. LEHMAN, DONALD J. NIEGLOS, STANLEY C. NOLTE et al
Title:
SYSTEM FOR PREVENTING SOFTWARE PIRACY EMPLOYING MULTI-ENCRYPTED KEYS AND SINGLE DECRYPTION CIRCUIT MODULES
Assignment: 1
Reel/Frame:
004456/0281Recorded: 09/03/1985Pages: 1
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors:
APPELBAUM, MATTHEW A.
Exec Dt:
08/27/1985
LEHMAN, DAVID B.
Exec Dt:
08/27/1985
NIEGLOS, DONALD J.
Exec Dt:
08/27/1985
NOLTE, STANLEY C.
Exec Dt:
08/27/1985
OEHLER, MICHAEL P.
Exec Dt:
08/27/1985
Assignee:
BURROUGHS CORPORATION
A CORP OF DE
DETROIT, MICHIGAN
Correspondent:
CHARLES J. FASSBENDER
SAN DIGEO PATENT GROUP
BURROUGHS CORPORATION
10850 VIA FRONTERA
SAN DIEGO, CA 92127
Assignment: 2
Reel/Frame:
005012/0501Recorded: 11/22/1988Pages: 251
Conveyance:
MERGER (SEE DOCUMENT FOR DETAILS).
Assignor:
BURROUGHS CORPORATION
Exec Dt:
05/09/1988
Assignee:
UNISYS CORPORATION
TOWNSHIP LINE AND UNION MEETING ROADS
P.O. BOX 500
BLUE BELL, PENNSYLVANIA 19424
Correspondent:
UNISYS CORPORATION
LAW DEPARTMENT
TOWNSHIP LINE AND UNION MEETING ROADS
P.O. BOX 500
BLUE BELL, PA 19424
Assignment: 3
Reel/Frame:
006950/0403Recorded: 04/21/1994Pages: 3
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor:
UNISYS CORPORATION
Exec Dt:
01/17/1992
Assignee:
UNISYS CAD/CAM
2970 WILDERNESS PLACE
BOULDER, COLORADO 80302
Correspondent:
THOMAS J. SCOTT, ESQ.
M.S. C1SW19
TOWNSHIP LINE & UNION MEETING
P.O. BOX 500
BLUE BELL, PA 19424
Assignment: 4
Reel/Frame:
007317/0051Recorded: 01/26/1995Pages: 3
Conveyance:
CHANGE OF NAME (SEE DOCUMENT FOR DETAILS).
Assignor:
UNISYS CAD/CAM, INC.
Exec Dt:
01/21/1992
Assignee:
FIRST CAD/CAM, INC.
6260 LOOKOUT ROAD
BOULDER, COLORADO 80301
Correspondent:
RICK MARTIN
PATENT LAW OFFICES OF RICK MARTIN, P.C.
609 TERRY STREET
LONGMONT, CO 80501

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