IP Library › Assignment 003869/0112
Patent Assignment
Reel/Frame 003869/0112

Assignment of Assignors Interest.

Recorded: 1981-02-18 Pages: 1
Assignors
CUNNINGHAM ROBERT A.
Executed: 1981-02-13
DOLEZAL GEORGE E.
Executed: 1981-02-13
Assignee
Covered Property (1)
Stressed Relieved Bit Leg for an Earth Boring Bit
Patent: 4,431,066 →
Application: 06/235,481 →
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest. May 15, 1984
From: HUGHES TOOL COMPANY
To: HUGHES TOOL COMPANY - USA A CORP OF
Reel/Frame 004269/0060 →
Change of Name Effective October 11, 1988 (Delaware) Nov 2, 1988
From: HUGHES TOOL COMPANY-USA, A CORP. OF DE
To: HUGHES TOOL COMPANY
Reel/Frame 005169/0319 →