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3690097
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Patent number 3,690,097
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Issue date Sep 12, 1972
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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3101060
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Patent number 3,101,060
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Issue date Aug 20, 1963
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES