About: http://webisa.webdatacommons.org/12097212

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 carrying out the method as set forth in the foregoing objects, apparatus has been invented, one of the objects of which is to provide novel and improved means for perforating a thin walled non-metallic tubing.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca