US PATENT SUBCLASS 244 / 3.18
.~.~.~ Celestial navigation

Current as of: June, 1999
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244 /   HD   AERONAUTICS

3.1  DF  MISSILE STABILIZATION OR TRAJECTORY CONTROL {4}
3.15  DF  .~ Automatic guidance {4}
3.16  DF  .~.~ Optical (includes infrared) {2}
3.18.~.~.~ Celestial navigation

DEFINITION

Classification: 244/3.18

(under subclass 3.16) Subject matter in which the light rays emanate from a celestial body (e.g., star, sun).

SEE OR SEARCH CLASS

73, Measuring and Testing,

178+, for navigation systems in general.

250, Radiant Energy,

203.1+, for optical systems for following a point (e.g., a star).