About: http://webisa.webdatacommons.org/200460249

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 as set forth in claim 8 wherein said valve is a check valve operatively arranged to permit fluid to exit said chamber.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com