US PATENT SUBCLASS 343 / 770
.~.~ Plural


Current as of: June, 1999
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343 /   HD   COMMUNICATIONS: RADIO WAVE ANTENNAS

700 R  DF  ANTENNAS {58}
767  DF  .~ Slot type {3}
770.~.~ Plural {1}
771  DF  .~.~.~> With wave guide coupling


DEFINITION

Classification: 343/770

(under subclass 767) Subject matter including two or more apertures in a surface, or two or more surfaces each having at least one aperture, all as defined in subclass 767, above.

(1) Note. A single physically continuous slot composed of a plurality of discrete and separately identifiable sections is

classified in this subclass, if each section operates separately and independently as a slot antenna. For example, a zigzag slot where each straight section is in itself a separate resonant slot is classified in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

768, for plural slot type antenna with periodic control of the slot or its coupling.

774, for stacked bi-conical horn antennas.

776+, for plural wave guide type antennas in general. 893, and the Search Notes thereunder, for plural antennas in general.