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3871907
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Patent number 3,871,907
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Issue date Mar 18, 1975
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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2260543
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Patent number 2,260,543
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Issue date Oct 28, 1941
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...