About: http://webisa.webdatacommons.org/209106135

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	6350: This tube was mainly manufactured for IBM and other computers in the late 1950s to mid 1960s.
http://www.w3.org/ns/prov#wasQuotedFrom	audiotubes.com