About: http://webisa.webdatacommons.org/38878071

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	This invention relates to a heavy duty lever type lock for up-and downwardly acting doors and closures and relates more in particular to a lock which pulls down the door to the threshold by the over-center cam principle.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com