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John J. Staudt III
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Odessa, TX, US
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last 30 patents
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Patent Grant
Power tongs
Patent number
4,334,444
Issue date
Jun 15, 1982
Bob's Casing Crews
Kenneth J. Carstensen
E21 - EARTH DRILLING MINING
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Patent Grant
Power tongs
Patent number
4,215,602
Issue date
Aug 5, 1980
Bob's Casing Crews
Kenneth J. Carstensen
E21 - EARTH DRILLING MINING