US PATENT SUBCLASS 320 / DIG 18
INDICATOR OR DISPLAY

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

DIG 18INDICATOR OR DISPLAY {3}
DIG 19  DD  .~> Charger status (e.g., voltmeter, etc.)
DIG 20  DD  .~> Polarity
DIG 21  DD  .~> State of charge of battery