About: http://webisa.webdatacommons.org/58304572

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	A forced air breathing apparatus as claimed in claim 2 in which the fan is a centrifugal fan.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com