US PATENT SUBCLASS 307 / 127
.~.~.~ Polarity, phase sequence or reverse flow

Current as of: June, 1999
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307 /   HD   ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS

112  DF  SWITCHING SYSTEMS {5}
116  DF  .~ Condition responsive {4}
125  DF  .~.~ Electrical {6}
127.~.~.~ Polarity, phase sequence or reverse flow

DEFINITION

Classification: 307/127

(under subclass 125) Subject matter in which the electrical condition to which the system is responsive is a condition of polarity, phase sequence or reverse flow.

SEE OR SEARCH THIS CLASS, SUBCLASS:

9.1+, for vehicle mounted systems.

SEE OR SEARCH CLASS

320, Electricity: Battery or Capacitor Charging or Discharging, appropriate subclass for polarity control or sensing in a battery charging or discharging system, especially

165, and Digest 15. 361, Electricity: Electrical Systems and Devices,

76, 77, 82, and 84+ for this subject matter combined with the safety and protection of a system or device.