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3712791
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Patent number 3,712,791
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Issue date Jan 23, 1973
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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2901312
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Patent number 2,901,312
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Issue date Aug 25, 1959
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...