IP Library › Assignment 004875/0191
Patent Assignment
Reel/Frame 004875/0191

Assignment of Assignors Interest.

Recorded: 1988-02-05 Pages: 1
Assignors
SCHNEIDER, DAVID E.
Executed: 1988-02-05
TIMMERMAN, TERRY D.
Executed: 1988-02-05
Assignee
WEATHERFORD U.S., INC., A CORPORATION OF DELAWARE
1360 POST OAK BOULEVARD, SUITE 1000, HOUSTON, TEXAS, 77227
Covered Property (1)
Hydraulic Lock Alleviation Device, Well Cementing Stage Tool, and Related Methods
Patent: 4,842,062 →
Application: 07/152,934 →
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Interest Sep 7, 1993
From: WEATHERFORD U.S., INC.
To: TEXAS COMMERCE BANK NATIONAL ASSOICATION
Reel/Frame 006677/0420 →
Release from Security Agreement Apr 26, 1994
From: TEXAS COMMERCE BANK NATIONAL ASSOCIATION
To: WEATHERFORD U.S., INC.
Reel/Frame 006968/0187 →