About: http://webisa.webdatacommons.org/54966376

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 casing circulator as defined in claim 1, wherein the sealing element is an elastomeric member for sealing with an outer surface of the casing string.11.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com