Patent Assignment
Reel/Frame 021547/0585
Change of Name
Recorded: 2008-09-18
Pages: 6
Assignor
DERRICK MANUFACTURING CORPORATION
Executed: 1993-03-31
Assignee
DERRICK CORPORATION
590 DUKE ROAD, BUFFALO, NEW YORK, 14225
Covered Properties
(4)
Vibratory Screening Machine and Vibratory Screen and Screen Tensioning Structure
Patent:
6,669,027 →
Application:
09/273,687 →
Method and Apparatus for Centrifuging a Slurry
Patent:
6,905,452 →
Application:
10/133,889 →
Method and Apparatus for Centrifuging a Slurry
Patent:
6,971,982 →
Application:
10/138,202 →
Method and Apparatus for Attenuating Sound from Vibratory Screening Machines
Related Assignments
(4)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Mar 23, 1999
From: MOONEY, JAMES A.; WOJCIECHOWSKI, KEITH F.
To: DERRICK MANUFACTURING CORPORATION
Reel/Frame 009856/0496 →
Assignment of Assignor's Interest
Aug 5, 2002
From: KIRSCH, RAYMOND
To: DERRICK MANUFACTURING CORPORATION
Reel/Frame 013147/0861 →
Assignment of Assignor's Interest
Aug 19, 2002
From: KIRSCH, RAYMOND
To: DERRICK MANUFACTURING CORPORATION
Reel/Frame 013197/0521 →
Assignment of Assignor's Interest
Apr 17, 2003
From: MOONEY, JAMES A.
To: DERRICK MANUFACTURING CORPORATION
Reel/Frame 013985/0890 →