About: http://webisa.webdatacommons.org/155963791

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	Other materials such as plastic and other synthetic materials are also within the scope of this invention.Additional cardboard sheets are formed into two ???L??? or ???V??? shape beams.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com