Patent Assignment
Reel/Frame 004486/0328
Assignment of Assignors Interest.
Recorded: 1985-11-21
Pages: 1
Assignor
GOTTSCHLING, JOHN
Executed: 1984-02-15
Assignee
HUGHES TOOL COMPANY A CORP OF DE
P.O. BOX 2539, HOUSTON, TEXAS, 77001
Covered Property
(1)
Method and Apparatus for Increasing the Concentration of Proppant in Well Stimulation Techniques
Patent:
4,569,394 →
Application:
06/584,584 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Nov 21, 1985
From: FREEMAN, EARL R.
To: HUGHES TOOL COMPANY A CORP OF DE
Reel/Frame 004486/0329 →
Assignment of Assignors Interest.
Nov 21, 1985
From: SWEATMAN, RONALD E.
To: HUGHES TOOL COMPANY A CORP OF DE
Reel/Frame 004486/0330 →
Assignment of Assignors Interest.
Aug 8, 1988
From: HUGHES TOOL COMPANY
To: BAKER HUGHES INCORPORATED
Reel/Frame 005050/0861 →
Assignment of Assignors Interest.
Sep 25, 1991
From: BAKER HUGHES INCORPORATED
To: BJ SERVICES COMPANY
Reel/Frame 005852/0291 →