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-
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3364873
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Patent number 3,364,873
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Issue date Jan 23, 1968
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3312358
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Patent number 3,312,358
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Issue date Apr 4, 1967
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B61 - RAILWAYS
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3311244
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Patent number 3,311,244
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Issue date Mar 28, 1967
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2035281
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Patent number 2,035,281
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Issue date Mar 24, 1936
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B61 - RAILWAYS