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3754836
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Patent number 3,754,836
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Issue date Aug 28, 1973
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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3306575
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Patent number 3,306,575
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Issue date Feb 28, 1967
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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3306576
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Patent number 3,306,576
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Issue date Feb 28, 1967
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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2377611
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Patent number 2,377,611
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Issue date Jun 5, 1945
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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2239709
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Patent number 2,239,709
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Issue date Apr 29, 1941
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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2139357
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Patent number 2,139,357
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Issue date Dec 6, 1938
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES