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3129564
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Patent number 3,129,564
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Issue date Apr 21, 1964
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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1970434
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Patent number 1,970,434
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Issue date Aug 14, 1934
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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1774974
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Patent number 1,774,974
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Issue date Sep 2, 1930
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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1617047
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Patent number 1,617,047
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Issue date Feb 8, 1927
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES