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Pumping mechanism
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Patent number 4,171,933
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Issue date Oct 23, 1979
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Gerhart Engineering and Machine Co.
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Gerhart W. Freimuth
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Container filling machine
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Patent number 4,108,221
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Issue date Aug 22, 1978
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Gerhart Engineering and Machine Co.
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Gerhart William Freimuth
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Piston pump mechanism
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Patent number 4,020,750
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Issue date May 3, 1977
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Gerhart Engineering and Machine Co.
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Gerhart William Freimuth
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Piston pump
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Patent number 4,009,645
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Issue date Mar 1, 1977
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Gerhart Engineering and Machine Company
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Gerhart William Freimuth
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...