About: http://webisa.webdatacommons.org/404133019

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. 15 is a partial vertical section showing a recessed valve for use with a pressurized container.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com