About: http://webisa.webdatacommons.org/264063822

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	ther object of the invention is to provide apparatus of the above character which is also capable of measuring electrical parameters such as potential, current, and power factor.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com