PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Patent US6635349 - Friction material for brake - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsThe present invention provides a friction material for brake not containing materials including heavy metals such as Cu or antimony.
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