US PATENT SUBCLASS 320 / DIG 22
LINE IMPEDANCE (E.G., RESISTOR, ETC.)

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

DIG 22LINE IMPEDANCE (E.G., RESISTOR, ETC.) {2}
DIG 23  DD  .~> Capacitor
DIG 24  DD  .~> Inductor