Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
Inventor
active
Copolymerizable molding compositions based on unsaturated polyur
Filter candle and filter stocking
Mixtures of polyurethanes and unsaturated polyester resins
Molding composition based on unsaturated polyesters
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