About: http://webisa.webdatacommons.org/397019013

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	The folding square 20 can be made out of any suitable material such as cast aluminum, stamped steel, or man-made materials (e.g. plastic).
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com