About: http://webisa.webdatacommons.org/256448301

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	U.S. Pat. No. 4,875,247 to Berg discloses a disposable tooth cleaning and polishing apparatus including a sheet of thin, flexible material such as paper cloth or synthetic foam material which also may be formed and contoured.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es