| http://www.w3.org/ns/prov#value | - Patent US5891294 - Stain blocking barrier layer - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsThe present invention is directed to a barrier layer which has the ability to substantially prevent the diffusion of stains, such as plasticizers and dyes or other chemicals, onto a surface of a surface covering, from a surface or object in whi
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