Patent Assignment
Reel/Frame 005670/0297
Assignment of Assignors Interest.
Recorded: 1991-04-15
Pages: 3
Assignor
EASTMAN CHRISTENSEN COMPANY, A CORP. OF DE
Executed: 1991-04-10
Covered Property
(1)
Method and Apparatus for Horizontal Drilling
Patent:
5,074,366 →
Application:
07/541,836 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Aug 13, 1990
From: KARLSSON, HARALDUR; HATTEN, JAMES L.; ASLAKSON, JOHN K.
To: EASTMAN CHRISTENSEN COMPANY
Reel/Frame 005397/0590 →
Assignment of Assignors Interest.
Mar 22, 1993
From: BAKER HUGHES INCORPORATED
To: ENERGY VENTURES, INC.
Reel/Frame 006449/0557 →
Assignment of Assignor's Interest
Aug 22, 1994
From: ENERGY VENTURES, INC.
To: EVI CHERRINGTON ENVIRONMENTAL, INC.
Reel/Frame 007107/0526 →