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Grain drill unit having seed firming wheel
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Patent number 5,398,625
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Issue date Mar 21, 1995
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Great Plains Manufacturing, Incorporated
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Eric Johnson
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Front folding no-till drill
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Patent number 5,232,054
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Issue date Aug 3, 1993
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Great Plains Manufacturing, Incorporated
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James I. Van Blaricon
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Universal press wheel arm assembly
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Patent number 5,022,333
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Issue date Jun 11, 1991
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Great Plains Manufacturing Incorporated
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J. Michael McClure
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING