Patent Assignment
Reel/Frame 005397/0590
Assignment of Assignors Interest.
Recorded: 1990-08-13
Pages: 4
Assignors
KARLSSON, HARALDUR
Executed: 1990-07-13
HATTEN, JAMES L.
Executed: 1990-07-17
ASLAKSON, JOHN K.
Executed: 1990-07-13
Assignee
EASTMAN CHRISTENSEN COMPANY
1937 SOUTH 300 WEST, A CORP. OF DE, SALT LAKE CITY, UTAH, 84115
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.
Apr 15, 1991
From: EASTMAN CHRISTENSEN COMPANY, A CORP. OF DE
To: BAKER HUGHES INCORPORATED, 3900 ESSEX LANE, SUITE 1200, HOUSTON, TX, A CORP. OF DE
Reel/Frame 005670/0297 →
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 →