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Hydraulic internal combustion engines
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Patent number 8,596,230
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Issue date Dec 3, 2013
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Sturman Digital Systems, LLC
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Oded Eddie Sturman
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Hydraulic powertrain system
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Patent number 8,449,270
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Issue date May 28, 2013
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Frank Michael Washko
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Pneumatic motor
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Patent number 4,467,699
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Issue date Aug 28, 1984
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Joy Manufacturing Company
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Louis H. LeBlanc
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E21 - EARTH DRILLING MINING
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Expansion engine
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Patent number 4,345,926
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Issue date Aug 24, 1982
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Tokyo Shibaura Denki Kabushiki Kaisha
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Shunichi Nakaya
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...