Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
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Hair lacquer or hair setting composition containing a tetrapolym
Hair laquer or hair setting composition containing a terpolymer
Terpolymer of (a) crotonic acid (b) vinyl acetate and (c) allyl
Tetrapolymers comprising (a) unsaturated acids (b) vinyl esters
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