About: http://webisa.webdatacommons.org/447069275

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	No. 849,635 3 Claims. (Cl. 137-493) This invention pertains to a valve, and more particularly to a valve of the charge and spill type.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com