About: http://webisa.webdatacommons.org/209087500

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 improvement according to claim 12 including adjusting elements operative to permit selective adjustment in pitch of said socket and head assembly relative to said foot structure.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com