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3721522
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Patent number 3,721,522
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Issue date Mar 20, 1973
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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1457607
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Patent number 1,457,607
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Issue date Jun 5, 1923
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...