About: http://webisa.webdatacommons.org/35360412

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 inner support cylinder may be made of perforated metal, porous sintered metal, or other material such as ceramic.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com