About: http://webisa.webdatacommons.org/360383695

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 any event, the open-cell foam is sealed within the pumping chamber of the device, except for hole 22 and the fluid passage provided by a check valve 30 (FIGS. 1, 3 and 4).
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au