Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
Inventor
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Equipment for mixing liquid reactants
Flexible polyurethane foams having substantial number of cells w
Process for making polyurethane foam
Process for preparing cold-cured molded polyurethane flexible fr
Process for preparing polyurethane foams having zones of differi
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