Assignment of Assignors Interest.

Recorded: 1989-01-31 Pages: 3

Assignor

HUGHES TOOL COMPANY-USA

Executed: 1988-02-19

Assignee

BAKER HUGHES, INC., A DE. CORP.

3900 ESSEX, HOUSTON, TEXAS, 77027

Covered Properties (3)

Centrifugal Water-Air Separation in Earth Drilling Bits

Patent: 4,245,710 →

Application: 05/921,700 →

Rock Bit with Improved Shirttail Ventilation

Patent: 4,421,184 →

Application: 06/327,525 →

Earth Boring Bit with Air System Access

Patent: 4,646,858 →

Application: 06/725,051 →

Related Assignments (2)

Other recorded transfers of the patents in this record — the chain of ownership.