Patent Assignment
Reel/Frame 004221/0904
Assignment of Assignors Interest.
Recorded: 1983-10-31
Pages: 2
Assignor
SHOEMAKER, LEON H.
Executed: 1983-09-06
Assignee
NATIONAL MINE SERVICE COMPANY
A CORP OF WV, PITTSBURGH, PENNSYLVANIA
Covered Property
(1)
Re-Railing Jack
Patent:
4,556,200 →
Application:
06/529,692 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Aug 10, 1989
From: BAKER HUGHES INCORPORATED
To: TAMROCK WORLD CORPORATION N.V., C/O PIERSON, HELDRING & PIERSON
Reel/Frame 005252/0056 →
Assignment of Assignors Interest.
Feb 14, 1990
From: NATIONAL MINE SERVICE COMPANY
To: BAKER HUGHES INCORPORATED, A CORP. OF DELAWARE
Reel/Frame 005284/0463 →
Assignment of Assignor's Interest
Dec 27, 1993
From: TAMROCK WORLD CORPORATION, N.V.
To: EIMCO COAL MACHINERY, INC.
Reel/Frame 006817/0690 →