About: http://webisa.webdatacommons.org/12400238

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	In particular, the invention relates to a bracket or frame including means for adjusting the position and angular orientation of a magnifying, filtering, or tinting lens, or set of lenses, relative to the screen.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com