About: http://webisa.webdatacommons.org/52153987

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 present invention particularly contemplates novel pumping mechanisms that may be used with a three-piston OPOC engine having at least one free piston.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr