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Ewing-Records & Associates, Inc.
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Converse, TX, US
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Patents Grants
last 30 patents
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Patent Grant
California type platform
Patent number
3,990,371
Issue date
Nov 9, 1976
Ewing-Records & Associates, Inc.
Louis K. Jacobsen
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
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last 30 trademarks