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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Airplane passenger seat with flame-retarding construction
Foam material element for sound-damping cavities
Process for preparing a flame-resistant, elastic soft polyuretha
Process for producing a flame-resistant elastic soft polyurethan
Process for the production of flame-retardant polyurethane foams
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