Patent Assignment
Reel/Frame 004468/0387
Assignment of Assignors Interest.
Recorded: 1985-10-11
Pages: 1
Assignee
Covered Property
(1)
System and Method for Controlled Directional Drilling
Patent:
4,667,751 →
Application:
06/786,817 →
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Mar 9, 1993
From: SMITH INTERNATIONAL, INC.
To: HCS LEASING CORPORATION
Reel/Frame 006452/0317 →
Assignment of Assignor's Interest
Jun 1, 1993
From: HCS LEASING CORPORATION, A WHOLLY OWNED SUBSIDIARY OF SMITH INTERNATIONAL, INC.
To: HALLIBURTON COMPANY
Reel/Frame 006544/0193 →