US PATENT SUBCLASS 318 / 648
.~.~ With inertial, direction or inclination measuring instrument

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

560  DF  POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) {23}
638  DF  .~ With particular "error-detecting" means {13}
648.~.~ With inertial, direction or inclination measuring instrument {1}
649  DF  .~.~.~> Stable platforms

DEFINITION

Classification: 318/648

(under subclass 638) Subject matter in which the error detecting means is an inertial, direction, or inclination measuring instrument.

SEE OR SEARCH CLASS

33, Geometrical Instruments,

340+, for geometric instruments which measure direction, inclination or inertia.

244, Aeronautics,

79, and 80 for automatic control of aircraft responsive to gyroscopes or pendulums.