About: http://webisa.webdatacommons.org/206129903

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	Apparatus according to claim 20, further including a double-acting electric magnet and a spring designed to vary the clamping power of the gripper. 24.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com