| http://www.w3.org/ns/prov#value | - While the cylinder and sheet materials of the invention find particular application as filter elements, they are useful generally in the manner of nonwoven fibrous webs, as insulation, liners or interliners in building construction, packaging materials, clothing, refrigeration and heating systems, carpeting and other floor coverings, engine housings for machinery, automobiles, trucks and buses, fa
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