Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
Inventor
active
Conductive polyurethane foam compositions and method for produci
Felted hydrophilic ester polyurethane foams
Hydrophilic ester polyurethane foams
Hydrophilic urethane foam
Ink retaining foam structure
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