About: http://webisa.webdatacommons.org/271060837

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	as metal, metallic alloys, natural or synthetic materials, plastics and the like, and appropriate manufacturing or production methods including casting, extruding, molding and machining may be used.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com