About: http://webisa.webdatacommons.org/392719934

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	Although placement of the leveling device is preferably near the corners of an object, placement is a design choice and the invention is not limited to embodiments described herein having leveling devices mounted near the corners.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com