发明授权
US5938162A Coaster 失效
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Coaster
摘要:
A coaster, for supporting a liquid carrying vessel on furniture having a furniture surface, and protecting the furniture surface from water damage. The coaster includes a top layer that is made of a soft fibrous material and absorbs liquids. The coaster has a bottom layer that is water repellant to isolate the liquids from the furniture surface. The coaster also has a chemically impregnated water absorbent layer, which contains sodium polyacrulate or simialr product(s).
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