About: http://webisa.webdatacommons.org/170808272

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 apparatus according to claim 1, including in addition thereto, a casing scraper sub connected within said tubing string of pipe below said tubular sub.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com