About: http://webisa.webdatacommons.org/338724378

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	A head as claimed in claim 44 wherein said means for reflecting including forming at least a portion of said first surface so as to reflect radiation impinging thereon.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com