US PATENT SUBCLASS 363 / 168
.~.~.~ Including plural anodes and single cathode device (e.g., vapor arc device)

Current as of: June, 1999
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363 /   HD   ELECTRIC POWER CONVERSION SYSTEMS

157  DF  FREQUENCY CONVERSION (f1-f2) WITHOUT INTERMEDIATE CONVERSION TO D.C. {7}
166  DF  .~ By electron tube converter {1}
167  DF  .~.~ With discharge control means {2}
168.~.~.~ Including plural anodes and single cathode device (e.g., vapor arc device)

DEFINITION

Classification: 363/168

Including plural anodes and single cathode device (e.g. vapor arc device):

(under subclass 167) Subject matter wherein the electronic tube is a device having more than one anode and only one cathode.