US PATENT SUBCLASS 379 / 56.2
.~ Including fiber optic link within telephone network

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

56.1  DF  HAVING LIGHT WAVE OR ULTRASONIC LINK FOR SPEECH OR PAGING SIGNAL {2}
56.2.~ Including fiber optic link within telephone network

DEFINITION

Classification: 379/56.2

Including fiber optic link within telephone network:

(under subclass 56.1) Subject matter wherein the electromagnetic wave is a light wave which propagates within a light transmitting waveguide in a telephone network.

SEE OR SEARCH CLASS

385, Optical Waveguides, appropriate subclasses for optical conducting elements, per se.