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Tube conveyor system
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Patent number 11,685,606
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Issue date Jun 27, 2023
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Valco Industries, Inc.
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Philip E. Risser
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3464676
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Patent number 3,464,676
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Issue date Sep 2, 1969
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B28 - WORKING CEMENT, CLAY, OR STONE
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3435964
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Patent number 3,435,964
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Issue date Apr 1, 1969
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2791887
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Patent number 2,791,887
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Issue date May 14, 1957
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2711262
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Patent number 2,711,262
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Issue date Jun 21, 1955
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2670070
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Patent number 2,670,070
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Issue date Feb 23, 1954
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2160234
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Patent number 2,160,234
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Issue date May 30, 1939
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2097381
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Patent number 2,097,381
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Issue date Oct 26, 1937
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1969367
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Patent number 1,969,367
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Issue date Aug 7, 1934
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1553792
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Patent number 1,553,792
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Issue date Sep 15, 1925
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL