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Roger M. Logan
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Houston, TX, US
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last 30 patents
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Patent Grant
Stabilizer for geophone
Patent number
5,434,828
Issue date
Jul 18, 1995
Western Atlas International, Inc.
Roger M. Logan
G01 - MEASURING TESTING
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Patent Grant
Geophone spring
Patent number
5,134,593
Issue date
Jul 28, 1992
Western Atlas International Inc.
Roger M. Logan
G01 - MEASURING TESTING