About: http://webisa.webdatacommons.org/441977209

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	FIG. 1 is a vertical cross section through a vacuum sustaining valve embodying principles of the invention, and illustrating schematically its association with an internal combustion engine EGR system.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com