About: http://webisa.webdatacommons.org/345647681

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	According to the invention, a clip or other device having an upper positioning member and a lower positioning member is provided for removably attaching a magnifying lens to a visor or brim of a hat or cap.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es