Patent Assignment Details
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Reel/Frame: | 003924/0606 | |
| Pages: | 1 |
| | Recorded: | 09/21/1981 | | |
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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05/22/1984
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Application #:
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06304078
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Filing Dt:
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09/21/1981
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Title:
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WELL DEVICES WITH ANNULUS CHECK VALVE AND HYDRAULIC BY-PASS
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Assignee
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703 CURTIS ST. |
MIDDLETOWN, OHIO 45043 |
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Correspondence name and address
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ROYLANCE, ABRAMS, BERDO & FARLEY
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STE. 315, 1225 CONNECTICUT AVE., N. W.
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WASHINGTON, DC 20036
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