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3173815
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Patent number 3,173,815
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Issue date Mar 16, 1965
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C30 - CRYSTAL GROWTH
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3170882
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Patent number 3,170,882
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C30 - CRYSTAL GROWTH
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3023091
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Patent number 3,023,091
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Issue date Feb 27, 1962
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C30 - CRYSTAL GROWTH
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Patent number 2,970,111
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Issue date Jan 31, 1961
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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Patent number 2,849,664
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Issue date Aug 26, 1958
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C30 - CRYSTAL GROWTH