US PATENT SUBCLASS 320 / FOR 167
.~.~.~ Field-winding circuit impedance (320/68)

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 160  DF  .~ Generation systems for battery charging (320/61) {4}
FOR 163  DF  .~.~ Generator field-winding circuit control (320/64) {3}
FOR 167.~.~.~ Field-winding circuit impedance (320/68) {2}
FOR 168  DF  .~.~.~.~> Step short-circuited type (320/69)
FOR 169  DF  .~.~.~.~> Pressure-responsive type of impedance (320/70)

DEFINITION

Classification: 320/FOR.167

Foreign art collection in which the means for controlling the circuit of the field-producing winding comprise an impedance connected in the circuit.