About: http://webisa.webdatacommons.org/70965161

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	Additionally, an optical switch and other optical devices and elements are provided, comprising articles similar to the inventive stamp.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com