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Patent Assignment Details
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Reel/Frame:005131/0643   Pages: 2
Recorded: 09/07/1989
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Total properties: 1
1
Patent #:
Issue Dt:
05/22/1990
Application #:
07404241
Filing Dt:
09/07/1989
Title:
SUBSURFACE WELL SAFETY VALVE WITH CURVED FLAPPER AND METHOD OF MAKING
Assignors
1
Exec Dt:
09/06/1989
2
Exec Dt:
09/06/1989
Assignee
1
A CORP. OF TX
HARRIS COUNTY HOUSTON, TEXAS
Correspondence name and address
PATENT DEPT.
FULBRIGHT & JAWORSKI
1301 MC KINNEY STREET
HOUSTON, TX 77010

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