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3759367
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Patent number 3,759,367
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Issue date Sep 18, 1973
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3409119
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Patent number 3,409,119
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Issue date Nov 5, 1968
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3318438
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Patent number 3,318,438
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Issue date May 9, 1967
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3253695
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Patent number 3,253,695
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Issue date May 31, 1966
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3184036
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Patent number 3,184,036
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Issue date May 18, 1965
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3070221
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Patent number 3,070,221
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Issue date Dec 25, 1962
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2792098
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Patent number 2,792,098
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Issue date May 14, 1957
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B28 - WORKING CEMENT, CLAY, OR STONE