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Valveless revolving cylinder engine
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Patent number 6,615,793
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Issue date Sep 9, 2003
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Victor J Usack
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Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
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Rotary engine
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Patent number 4,307,695
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Issue date Dec 29, 1981
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Michael Vasilantone
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Rotary piston engine
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Patent number 4,030,458
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Issue date Jun 21, 1977
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August Uno Lamm
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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2534590
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Patent number 2,534,590
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Issue date Dec 19, 1950
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS