About: http://webisa.webdatacommons.org/327058712

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	The invention is particularly useful under conditions where it is either substantially impossible or actually impossible to cut the spiral in the body of the coupling in any commercial quantity production work.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es