Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
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active
Azeotropes of 2-methylbutane and 1,1-dichloro-1-fluorethane and
Expansion of polymeric microspheres insitu in a rigid PUR/PIR fo
Method and apparatus for the production of essentially void free
Method and apparatus for the production of essentially void free
Novel azeotropes and the use thereof in the production of rigid
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