US PATENT SUBCLASS 320 / FOR 159
.~.~.~ Space-discharge devices (320/60)

Current as of: June, 1999
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320 /   HD   ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING

FOR 101  DF  BATTERY CHARGING AND/OR DISCHARGING (320/2) {15}
FOR 156  DF  .~ Rectifying systems for battery charging (320/57) {2}
FOR 158  DF  .~.~ Unidirectionally conductive-type rectifier (320/59) {1}
FOR 159.~.~.~ Space-discharge devices (320/60)

DEFINITION

Classification: 320/FOR.159

Foreign art collection in which the unidirectionally conductive type of rectifier includes devices having electrodes spaced apart in a gaseous or a vacuous medium and between which electrodes the electric current being rectified can be caused to flow.