About: http://webisa.webdatacommons.org/410258995

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	In the drawings herewith, Fig. 1 is a central longitudinal section through a relief'valve employing my invention thereon.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com