About: http://webisa.webdatacommons.org/12318226

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	In a third embodiment of the invention (type III embodiment), the optical security mark comprises a two-dimensional logical matrix of L rows and M columns, where each of its elements is a type I or II embodiment.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com