US PATENT SUBCLASS 342 / 57
.~ With radio voice communication

Current as of: June, 1999
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342 /   HD   COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION)

52  DF  COMBINED WITH DIVERSE TYPE RADIANT ENERGY SYSTEM {6}
57.~ With radio voice communication

DEFINITION

Classification: 342/57

With radio voice communication:

(under subclass 52) Subject matter including the transmission and reception of human voice communication by radio wave.

SEE OR SEARCH CLASS

455, Telecommunications, for generic radio wave voice communications.