Patent Assignment Abstract of Title
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Total Assignments:
4
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Patent #:
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Issue Dt:
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03/01/1994
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Application #:
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08007257
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Filing Dt:
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01/21/1993
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Inventors:
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MARVIN GEARHART, JOHNNY N. CASTLE, PAUL G. PARYS
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Title:
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ROLLER CONE CORE BIT WITH SPIRAL STABILIZERS
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| 7601 WILL ROGERS BOULEVARD |
| FORT WORTH, TEXAS 76140 |
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| WINSTEAD PC / ROBERT C. SHADDOX |
| 919 MILAM STREET |
| SUITE 2400 |
| HOUSTON, TX 77002 |
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Assignment:
2
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| 120 LONG RIDGE RD |
| STAMFORD, CONNECTICUT 06927 |
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| KATHLEEN E. CAULFIELD |
| 2020 K ST. NW |
| WASHINGTON, DC 20006 |
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Assignment:
3
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| 7601 WILL ROGERS BOULEVARD |
| FORT WORTH, TEXAS 76140 |
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| ROBERT C. SHADDOX |
| WINSTEAD PC |
| P.O. BOX 50784 |
| DALLAS, TX 75201 |
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Assignment:
4
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RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS).
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| 420 THROCKMORTON STREET |
| SUITE 1110 |
| FORT WORTH, TEXAS 76102 |
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| 7010-45 STREET |
| LEDUC, ALBERTA, CANADA T9E 7E7 |
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| SOLYN J. LEE |
| JONES DAY |
| 222 EAST 41 STREET |
| NEW YORK, NY 10017 |
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