US PATENT SUBCLASS 318 / 582
.~.~ Celestial navigation

Current as of: June, 1999
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318 /   HD   ELECTRICITY: MOTIVE POWER SYSTEMS

560  DF  POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) {23}
580  DF  .~ Vehicular guidance systems with single axis control {8}
582.~.~ Celestial navigation

DEFINITION

Classification: 318/582

(under subclass 580) Subject matter in which the steering

control is obtained by celestial means.

SEE OR SEARCH CLASS

244, Aeronautics,

3.18, for guidance systems employing a celestial body.

250, Radiant Energy,

203.1, for photoelectric systems responsive to a point of illumination such as a star, etc.