About: http://webisa.webdatacommons.org/110943399

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	BACKGROUND OF THE INVENTION This invention relates generally to lifting devices such as screw jacks and the like. and more particularly con cerns a novel gear part for use in a screw jack.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com