US PATENT SUBCLASS 340 / 850
UNDERWATER


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



340 /   HD   COMMUNICATIONS: ELECTRICAL

850UNDERWATER {2}
851  DF  .~> Ship guidance system
852  DF  .~> Electrodes and electrode systems


DEFINITION

Classification: 340/850

UNDERWATER:

(under the class definition) Subject matter in which a significant portion of the communication takes place under water.

SEE OR SEARCH THIS CLASS, SUBCLASS:

230, for electric signalling systems in which the signal is transmitted along a fluid conduit but not through the fluid therein.

SEE OR SEARCH CLASS

116, Signals and Indicators,

27, for this subject matter when nonelectrical.

367, Communications, Electrical: Acoustic Wave Systems and Devices, 131, for underwater electrical communication employing acoustic wave.