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3709357
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Issue date Jan 9, 1973
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3659700
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Patent number 3,659,700
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Issue date May 2, 1972
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3648826
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Patent number 3,648,826
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Issue date Mar 14, 1972
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3280963
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Patent number 3,280,963
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Issue date Oct 25, 1966
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2397305
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Issue date Mar 26, 1946
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL