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Eccentric rotor compressor
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Patent number 8,075,292
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Issue date Dec 13, 2011
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Xiaoying Yun
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Rotary positive displacement machine
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Patent number 7,231,894
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Issue date Jun 19, 2007
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E.A. Technical Services Limited
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Ronald William Driver
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Lever-mechanism motor or pump
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Patent number 7,044,725
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Issue date May 16, 2006
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Veikko Kalevi Rantala
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Lever-mechanism motor or pump
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Patent number 6,887,059
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Issue date May 3, 2005
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Veikko Kalevi Rantala
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Rotary compressor
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Patent number 6,827,564
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Issue date Dec 7, 2004
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KNF Neuberger GmbH
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Erich Becker
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Fluid displacement apparatus and method
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Patent number 6,065,289
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Issue date May 23, 2000
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Quiet Revolution Motor Company, L.L.C.
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Darryl H. Phillips
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Roto-reciprocating engine
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Patent number 3,990,406
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Issue date Nov 9, 1976
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Roger L. Sogge
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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3905727
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Patent number 3,905,727
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Issue date Sep 16, 1975
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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3901630
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Patent number 3,901,630
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Issue date Aug 26, 1975
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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3312201
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Patent number 3,312,201
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Issue date Apr 4, 1967
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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3081707
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Patent number 3,081,707
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Issue date Mar 19, 1963
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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2464208
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Patent number 2,464,208
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Issue date Mar 15, 1949
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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1841841
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Patent number 1,841,841
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Issue date Jan 19, 1932
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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1525364
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Patent number 1,525,364
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Issue date Feb 3, 1925
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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1408292
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Patent number 1,408,292
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Issue date Feb 28, 1922
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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1408381
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Patent number 1,408,381
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Issue date Feb 28, 1922
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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1408380
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Patent number 1,408,380
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Issue date Feb 28, 1922
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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1266298
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Patent number 1,266,298
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Issue date May 14, 1918
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES