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Concentric rotary fluid machine
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Patent number 9,957,961
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Issue date May 1, 2018
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Greystone Technologies Pty Ltd
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Nicholas Ryan Marchand
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Engine with pivoting type piston
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Patent number 7,650,860
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Issue date Jan 26, 2010
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IRIS Engines, Inc.
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Timber Dick
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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 7,143,737
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Issue date Dec 5, 2006
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Dong-Hyun Kim
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Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
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Variable vane rotary engine
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Patent number 6,729,296
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Issue date May 4, 2004
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Matthew Brandon King
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Displacement machine
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Patent number 5,004,409
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Issue date Apr 2, 1991
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Raoul S. Nakhmanson
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Machines for energy conversion
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Patent number 4,012,182
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Issue date Mar 15, 1977
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Gosta Svensson
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Rotary engine
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Patent number 3,976,037
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Issue date Aug 24, 1976
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Edward J. Hojnowski
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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3918415
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Patent number 3,918,415
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Issue date Nov 11, 1975
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS