US PATENT SUBCLASS 361 / 246
.~ Automatic

Current as of: June, 1999
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361 /   HD   ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES

245  DF  POLARITY REVERSING {1}
246.~ Automatic

DEFINITION

Classification: 361/246

Automatic:

(under subclass 245) Subject matter in which the polarity is reversed in accordance with an automatic control.