About: http://webisa.webdatacommons.org/121215178

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	Hydrogen fueled ram jet engines have been developed of the hypersonic type, which are capable of speeds up to and exceeding Mach 8, and the present invention is particularly concerned with such an engine.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com