<http://webisa.webdatacommons.org/372905912>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<patents.com> .
<http://webisa.webdatacommons.org/prov/294561050>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/372905912> .
<http://webisa.webdatacommons.org/372905912>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/372905912>	<http://www.w3.org/ns/prov#value>	"or extrusion and may be made of aluminum, steel, or other material." .