PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Patent US5590495 - Solar roofing system - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsA photovoltaic module that serves as a shingle, tile or other building material that may be placed onto the exterior of a structure.
http://www.w3.org/ns/prov#wasQuotedFrom
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