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3651967
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Patent number 3,651,967
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Issue date Mar 28, 1972
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2374009
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Patent number 2,374,009
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Issue date Apr 17, 1945
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2179100
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Patent number 2,179,100
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Issue date Nov 7, 1939
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1675197
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Patent number 1,675,197
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Issue date Jun 26, 1928
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1451748
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Patent number 1,451,748
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Issue date Apr 17, 1923
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL