About: http://webisa.webdatacommons.org/52496329

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 following invention relates generally to pipeline, commonly known as "stoppers" which are used extensively in pipes, tubes, conduits, etc. for sealing against (or diverting) the flow of: gases, liquids, slurries, and other materials.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com