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3700179
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Patent number 3,700,179
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Issue date Oct 24, 1972
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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3687575
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Patent number 3,687,575
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Issue date Aug 29, 1972
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL