US PATENT SUBCLASS 434 / 186
MAGNETIC OR GYRO COMPASS


Current as of: June, 1999
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434 /   HD   EDUCATION AND DEMONSTRATION

186MAGNETIC OR GYRO COMPASS


DEFINITION

Classification: 434/186

MAGNETIC OR GYRO COMPASS:

(under the class definition) Subject matter relating to a device for determining directions by means of (a) a magnetic needle turning freely on a pivot and pointing to the magnetic north, or (b) a direction indicator controlled by a gyroscope.