Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
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Engineered polyolefin materials
Engineered polyolefin materials with enhanced properties
Thermoplastic polypropylene blends with mixtures of ethylene/but
Thermoplastic polypropylene blends with mixtures of ethylene/but
Thermoplastic polypropylene blends with mixtures of ethylene/but
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