Patent Assignment Abstract of Title
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Total Assignments:
2
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Patent #:
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Issue Dt:
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07/30/1991
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Application #:
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07500969
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Filing Dt:
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03/29/1990
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Inventor:
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ROBERT MESSINGER
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Title:
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VACUUM CONTROL SYSTEM FOR LIFTING SYSTEMS
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Assignment:
1
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| 901 MAIN STREET, 6TH FLOOR |
| DALLAS, TEXAS 75202 |
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| ELIZABETH S. HELM |
| 901 MAIN STREET, SUITE 5050 |
| DALLAS, TEXAS 75202 |
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Assignment:
2
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AMENDMENT OF SECURITY AGREEMENT
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| 910 MAIN STREET, 6TH FLOOR |
| DALLAS, TEXAS 75202 |
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| CATHERINE GREANEY |
| SOUTH TOWER PENNZOIL PLACE |
| 711 LOUISIANA, SUITE 2900 |
| HOUSTON, TX 77002-2781 |
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