About: http://webisa.webdatacommons.org/438456674

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	An embodiment is especially preferred according to which the casing and the pressure piston are formed approximately rectangularly.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com