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3761025
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Patent number 3,761,025
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Issue date Sep 25, 1973
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
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1345715
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Patent number 1,345,715
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Issue date Jul 6, 1920
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
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614074
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Patent number 614,074
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Issue date Nov 15, 1898
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...