About: http://webisa.webdatacommons.org/85538359

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 further relates to keys or buttons for manually operating switches or the like and more particularly to keys which display changeable images that convey information pertinent to operation of a switch or the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com