US PATENT SUBCLASS 379 / 378
.~.~ With current controlling electromagnetic core device (e.g., Hall-effect device)

Current as of: June, 1999
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379 /   HD   TELEPHONIC COMMUNICATIONS

350  DF  SUPERVISORY OR CONTROL LINE SIGNALLING {5}
377  DF  .~ Using line or loop condition detection (e.g., line circuit) {7}
378.~.~ With current controlling electromagnetic core device (e.g., Hall-effect device)

DEFINITION

Classification: 379/378

With current controlling electromagnetic core device (e.g., Hall-effect device):

(under subclass 377) Subject matter having a magnetizable element within a coiled conductor for current control.