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3470825
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Patent number 3,470,825
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Issue date Oct 7, 1969
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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2827859
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Patent number 2,827,859
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Issue date Mar 25, 1958
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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2800857
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Patent number 2,800,857
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Issue date Jul 30, 1957
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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2503614
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Patent number 2,503,614
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Issue date Apr 11, 1950
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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1876833
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Patent number 1,876,833
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Issue date Sep 13, 1932
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...