About: http://webisa.webdatacommons.org/111106406

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	Embodiments are disclosed for use either with conventional 50/60 Hz or at high frequency, i.e. above 400 Hz.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com