About: http://webisa.webdatacommons.org/388472494

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	Being open at both ends, they are well suited to applications such as the present invention and can be installed directly in line with the flow of gas through a vacuum system.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com