About: http://webisa.webdatacommons.org/440711585

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	The invention of claim 11 and wherein said screen is a hemispherical projection screen provided with means for providing a uniform illumination to said hemispherical projection screen viewed by said patient.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com