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Rotatable feedgate
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Patent number 6,361,266
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Issue date Mar 26, 2002
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The Louis Berkman Company
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Roland L. Hagemeyer
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B60 - VEHICLES IN GENERAL
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Rotatable feedgate
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Patent number 5,823,734
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Issue date Oct 20, 1998
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The Louis Berkman Company
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Roland L. Hagemeyer
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B60 - VEHICLES IN GENERAL
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Spreader guard
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Patent number 4,549,697
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Issue date Oct 29, 1985
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Swenson Spreader Company
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Kenneth P. Manon
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES