About: http://webisa.webdatacommons.org/373055043

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	Apparatus according to claim 12 and including at least one valve that allows exchange of air within the cavity when the pump is energized.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com