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Two-stage positive displacement pump
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Patent number 5,584,669
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Issue date Dec 17, 1996
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KNF Neuberger GmbH
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Erich Becker
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Two-stage positive displacement pump
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Patent number 5,387,090
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Issue date Feb 7, 1995
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KNF Neuberger GmbH
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Erich Becker
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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3809506
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Patent number 3,809,506
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Issue date May 7, 1974
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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3789675
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Patent number 3,789,675
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Issue date Feb 5, 1974
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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3656874
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Patent number 3,656,874
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Issue date Apr 18, 1972
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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3473726
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Patent number 3,473,726
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Issue date Oct 21, 1969
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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1495290
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Patent number 1,495,290
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Issue date May 27, 1924
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...