Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
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active
Apparatus for making cast annular laminates
Cast annular laminates and method and apparatus for making same
Method for treating polypropylene ether and poly-1,2-butylene et
Thermoplastic polyurethane prepared from a poly-1,2-propylene et
Thermoset polyurethane prepared from a polypropylene ether triol
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