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3610780
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Patent number 3,610,780
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Issue date Oct 5, 1971
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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1328139
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Patent number 1,328,139
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Issue date Jan 13, 1920
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...