About: http://webisa.webdatacommons.org/171959387

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	While various materials can be employed in the system of the present invention, most advantageously metal is used because of its strength, durability and relative light weight.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com