About: http://webisa.webdatacommons.org/239976474

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	-back tube systemUS6090094Oct 4, 1996Jul 18, 2000Microgroup, Inc.Ball valves and uses thereof including endoscopic surgical instrumentsUS6110154Oct 8, 1997Aug 29, 2000Hakko Electric Machine Works, Co.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com