About: http://webisa.webdatacommons.org/443334486

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	attachment means comprising a screw including a head and a threaded portion, the head having a larger outer diameter than the outer diameter of the threaded portion to define a rear shoulder;
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com