About: http://webisa.webdatacommons.org/135337110

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	The invention as defined in claim 1 wherein said pressurizing means is a bellows and said venting means includes an aperture in said bellows.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com