About: http://webisa.webdatacommons.org/62286286

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	A resistance device such as a spring, rubberized cord, air cylinder, attaches between the pivotally attached adjustable lever arms and the desk.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com