About: http://webisa.webdatacommons.org/127227719

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 18, further including amplifiers (40a, 40b, 40c; 52, 49) connected between the opto-couplers and the gate electrodes of the controlled semiconductor switches.20.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com