About: http://webisa.webdatacommons.org/199813930

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	Commercially available slide projectors are available from Vivatar, Kodak, Agfa, and other manufacturers.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com