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Dennis H. Sapp
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Terre Haute, IN, US
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last 30 patents
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Patent Grant
Framework structure
Patent number
4,381,636
Issue date
May 3, 1983
Research-Cottrell, Inc.
Dennis H. Sapp
E04 - BUILDING
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Patent Grant
Equilateral derrick structure
Patent number
4,122,646
Issue date
Oct 31, 1978
Research-Cottrell, Inc.
Dennis H. Sapp
E04 - BUILDING