Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
Inventor
active
Apparatus for manufacturing porous polytetrafluoroethylene mater
Cooking instrument using a microwave oven for heating a primary
Elastic roller for fixing and method of producing the same
Highly weather-proof high strength tri-axial woven membrane mate
Liquid membrane
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