About: http://webisa.webdatacommons.org/104682192

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. 4,892,482 discloses a gingival tissue dental retraction cord made of a plurality of strands including a central stiffener strand of, for example, copper wire or other material which provides the cord with deformability.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr