PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • U.S. Pat. No. 4,462,883 to Hart discloses a low emissivity coating produced by cathode sputtering a layer of silver, a small amount of metal other than silver, and an antireflection layer of metal oxide onto a transparent substrate such as glass.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.es