Patent Assignment Details
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Reel/Frame: | 005125/0495 | |
| Pages: | 2 |
| | Recorded: | 07/07/1989 | | |
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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03/19/1991
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Application #:
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07258936
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Filing Dt:
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10/17/1988
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Title:
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ANALOG-TO-DIGITAL AND DIGITAL-TO-ANALOG CONVERSION SYSTEM AND ECHO CANCELLATION DEVICE INCLUDING THE SAME
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Correspondence name and address
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EDWARD H. DUFFIELD
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IBM CORP. 972/002
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P. O. BOX 12195
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RES. TRI. PARK, NC 27709
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