About: http://webisa.webdatacommons.org/51845259

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 fastening means which is operatively associated with the drive means and the shutter element preferably comprises a fastener such as a pop rivet which is connected directly to the shutter element and one end of the bimetallic spring.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com