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3547172
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Patent number 3,547,172
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Issue date Dec 15, 1970
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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2492603
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Patent number 2,492,603
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Issue date Dec 27, 1949
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
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1828247
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Patent number 1,828,247
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Issue date Oct 20, 1931
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
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1484715
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Patent number 1,484,715
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Issue date Feb 26, 1924
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
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1344470
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Patent number 1,344,470
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Issue date Jun 22, 1920
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...