US PATENT SUBCLASS 33 / 323
.~.~.~ Directive gyroscope stabilized by auxiliary gyroscope

Current as of: June, 1999
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33 /   HD   GEOMETRICAL INSTRUMENTS

300  DF  INDICATOR OF DIRECTION OF FORCE TRAVERSING NATURAL MEDIA {23}
318  DF  .~ Gyroscopically controlled or stabilized {5}
321  DF  .~.~ Plural gyroscopes (e.g., reference platform, etc.) {2}
323.~.~.~ Directive gyroscope stabilized by auxiliary gyroscope

DEFINITION

Classification: 33/323

(under subclass 321) Device wherein one of said gyroscopes is utilized to indicate direction and another of said gyroscopes is utilized to apply a correcting or controlling force to a component of said first gyroscope or said first gyroscope system to maintain the equilibrium thereof.