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3786726
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Patent number 3,786,726
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Issue date Jan 22, 1974
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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3279389
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Patent number 3,279,389
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Issue date Oct 18, 1966
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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3165068
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Patent number 3,165,068
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Issue date Jan 12, 1965
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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3142229
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Patent number 3,142,229
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Issue date Jul 28, 1964
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES