About: http://webisa.webdatacommons.org/336163814

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	Field of the Invention [0002] The present invention relates to light-quantity adjusting apparatuses used in optical apparatuses, such as cameras, video cameras, digital cameras or lens apparatuses mounted to them. [0003] 2.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com