US PATENT SUBCLASS 340 / 974
.~.~ Attitude

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

945  DF  AIRCRAFT ALARM OR INDICATING SYSTEMS {11}
971  DF  .~ Nonalarm flight indicator {7}
974.~.~ Attitude {2}
975  DF  .~.~.~> Roll or pitch
976  DF  .~.~.~> Glide slope or path

DEFINITION

Classification: 340/974

Attitude:

(under subclass 971) Subject matter having a changeable indicator responsive to the position of the aircraft by the inclination of its axes to a frame of reference.

(1) Note. If not otherwise specified, this frame of reference is fixed to the earth.

SEE OR SEARCH CLASS

33, Geometrical Instruments,

328, for attitude indicators.