Patent Assignment Details
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| Reel/Frame: | 005167/0803 | |
| Pages: | 3 |
| | Recorded: | 10/26/1989 | | |
| Conveyance: | ASSIGNMENT OF ASSIGNORS INTEREST. |
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Total properties:
1
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Patent #:
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Issue Dt:
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09/24/1991
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Application #:
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07427691
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Filing Dt:
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10/26/1989
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Title:
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METHOD AND APPARATUS FOR SEISMIC SURVEYING INCLUDING USING VERTICAL GRADIENT ESTIMATION TO SEPARATE DOWNGOING SEISMIC WAVEFIELD
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Assignee
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| A CORP. OF DELAWARE |
| LOS ANGELES, CALIFORNIA |
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Correspondence name and address
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ANDREW S. VIGER
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BAKER, MILLS & GLAST
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500 TRAMMELL CROW CENTER
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2001 ROSS AVENUE
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DALLAS, TX 75201-2916
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