About: http://webisa.webdatacommons.org/6394661

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	n addition, the upper portion of existing multi-component ladder shoes is typically made from an electrically conductive material, such as aluminum, which can thus expose the ladder user to the risk of electrocution.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com