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2968397
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Patent number 2,968,397
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Issue date Jan 17, 1961
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2660300
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Patent number 2,660,300
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Issue date Nov 24, 1953
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F42 - AMMUNITION BLASTING
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2124217
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Patent number 2,124,217
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Issue date Jul 19, 1938
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1947446
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Patent number 1,947,446
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Issue date Feb 20, 1934
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1732264
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Patent number 1,732,264
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Issue date Oct 22, 1929
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1501314
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Patent number 1,501,314
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Issue date Jul 15, 1924
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL