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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Compressed, rigid polyurethane foams
Polyether polyols, polyol formulation containing them and their
Polyether polyols, polyol formulation containing them and their
Polyol mixture for the preparation of rigid polyurethane foams
Process for the production of rigid polyurethane foams
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