About: http://webisa.webdatacommons.org/20074087

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	Known vacuum switch or interrupter devices include a rigid reinforcing structure, such as an epoxy or rigid polymeric molding or casting, encapsulating the bottle.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com