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3511826
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Patent number 3,511,826
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Issue date May 12, 1970
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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3496161
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Patent number 3,496,161
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Issue date Feb 17, 1970
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...