Patent Assignment Details
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For pending or abandoned applications please consult USPTO staff.
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Reel/Frame: | 010113/0233 | |
| Pages: | 4 |
| | Recorded: | 07/22/1999 | | |
Conveyance: | ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
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Total properties:
3
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Patent #:
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Issue Dt:
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03/31/1992
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Application #:
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07631876
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Filing Dt:
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12/21/1990
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Title:
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ROCK DRILL BIT LUBRICANT CIRCULATING SYSTEM
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Patent #:
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Issue Dt:
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03/02/1993
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Application #:
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07812748
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Filing Dt:
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12/24/1991
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Title:
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ROCK BIT MANUFACTURING METHOD
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Patent #:
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Issue Dt:
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02/13/1996
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Application #:
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08347823
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Filing Dt:
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12/01/1994
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Title:
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EARTH BORING BIT AND LUBRICATOR/COMPENSATOR THEREFOR
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Assignee
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4201 PARK AVENUE S.W. |
BIRMINGHAM, ALABAMA 35228 |
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Correspondence name and address
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BROWNING BUSHMAN
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WALTER R. BROOKHART
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5718 WESTHEIMER, SUITE 1800
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HOUSTON, TEXAS 77057
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