About: http://webisa.webdatacommons.org/265612258

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 accordance with the present invention, it is preferred that the housing components, including the main sleeve 42, import port 50 and top cap 48 are all made of metal but may be made if other materials such as ceramic, when desired.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com