US PATENT SUBCLASS 361 / 69
.~.~.~ Pilot wire communication

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

1  DF  SAFETY AND PROTECTION OF SYSTEMS AND DEVICES {32}
67  DF  .~ Series connected sections with faulty section disconnect {2}
68  DF  .~.~ With communication between disconnect points {1}
69.~.~.~ Pilot wire communication

DEFINITION

Classification: 361/69

Pilot wire communication:

(under subclass 68) Subject matter wherein the signal between disconnect points is communicated over pilot wire.