About: http://webisa.webdatacommons.org/133409986

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	Also shown as an optional feature is a release mechanism to permit the gooseneck supports 11 to pivot upwardly about a transverse axis on each rod weeder frame 12 in response to impact forces caused by obstructions such as rocks etc.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com