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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Apparatus and method for machining with cryogenically cooled...
Apparatus and method for transferring a cryogenic fluid
Apparatus and method of cryogenic cooling for high-energy...
Aqueous wax dispersions as cell openers in making polyurethane f
Low emission, cell opening surfactants for polyurethane flexible
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