About: http://webisa.webdatacommons.org/151622054

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 addition, it is to be understood that the present invention may be used with polishing pads which have been preconditioned, such as with concentric grooves as illustrated in U.S. Pat. No. 5,216,843.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca