Patent Assignment
Reel/Frame 004835/0870
Assignment of Assignors Interest.
Recorded: 1988-03-21
Pages: 2
Assignor
BIEK, PAUL A.
Executed: 1987-11-30
Assignee
DRESSER INDUSTRIES, INC., A DE CORP.
DALLAS, TEXAS
Covered Property
(1)
Power Drill System with Adjustable Depth Sensing Means
Patent:
4,813,822 →
Application:
07/141,476 →
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.