About: http://webisa.webdatacommons.org/162868897

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 mouthpiece device according to claim 1, wherein the filter is a 0.3 micron filter having a filtration area of at least about 37.5 cm2. 9.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com