Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
Inventor
active
Flame retardant, char-forming, flexible polyurethane foams
Flexible polyurethane foams having low resistance to air flow an
Polyester polyurethane foams having antistatic properties
Polyurethane foam based on combination of polyester resin and po
Polyurethane foam resistant to smoldering combustion containing
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