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3399069
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Patent number 3,399,069
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Issue date Aug 27, 1968
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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1327933
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Patent number 1,327,933
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Issue date Jan 13, 1920
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...