US PATENT SUBCLASS 250 / 231.12
.~.~.~.~ Gyroscopes

Current as of: June, 1999
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250 /   HD   RADIANT ENERGY

200  DF  PHOTOCELLS; CIRCUITS AND APPARATUS {11}
216  DF  .~ Optical or pre-photocell system {11}
229  DF  .~.~ Light valve (e.g., iris diaphragm) {3}
231.1  DF  .~.~.~ Actuated by dynamic external physical quantity {4}
231.12.~.~.~.~ Gyroscopes

DEFINITION

Classification: 250/231.12

Gyroscopes:

(under subclass 231.1) Subject matter wherein gyroscopic movements or conditions are the active external physical quantities sensed.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism,

5.6, for gyroscopes with optical pickoffs.