Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
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active
Highly reactive polyoxyalkylene-polyols containing tertiary amin
Preparation of CFC-free, highly resilient, flexible polyurethane
Preparation of chlorofluorocarbon-free flexible polyurethane foa
Preparation of chlorofluorocarbon-free flexible polyurethane foa
Preparation of chlorofluorocarbon-free flexible polyurethane foa
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