About: http://webisa.webdatacommons.org/391799532

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	Such a chain as that described is well known in the art and may be purchasedcommercially from Rexnord, Mechanical Power Division, 725 South Adams, Birmingham, Mich.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com