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3661057
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Patent number 3,661,057
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Issue date May 9, 1972
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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3357312
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Patent number 3,357,312
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Issue date Dec 12, 1967
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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3220316
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Patent number 3,220,316
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Issue date Nov 30, 1965
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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3199460
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Patent number 3,199,460
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Issue date Aug 10, 1965
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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3188918
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Patent number 3,188,918
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Issue date Jun 15, 1965
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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3035553
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Patent number 3,035,553
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Issue date May 22, 1962
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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2709422
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Patent number 2,709,422
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Issue date May 31, 1955
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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2638876
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Patent number 2,638,876
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Issue date May 19, 1953
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS