About: http://webisa.webdatacommons.org/155628433

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	The washer comprises a rigid member, preferably made of hardened steel, in the form of an annulus, rectangle, or other suitable shape made by stamping or the like.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com