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William E. Walles
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Midland, MI, US
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last 30 patents
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Patent Grant
Sulfonation of polybenzoxazole and polybenzothiazole for improved a...
Patent number
5,216,114
Issue date
Jun 1, 1993
The Dow Chemical Company
William E. Walles
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...