US PATENT SUBCLASS 70 / 279.1
.~.~.~ And alternately mechanically actuated by a key, dial, etc.

Current as of: June, 1999
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70 /   HD   LOCKS

266  DF  OPERATING MECHANISM {6}
275  DF  .~ Using a powered device (e.g., motor) {2}
277  DF  .~.~ Electrical type (e.g., solenoid) {8}
279.1.~.~.~ And alternately mechanically actuated by a key, dial, etc.

DEFINITION

Classification: 70/279.1

And alternately mechanically actuated by a key, dial, etc.:

(under subclass 277) Subject matter in which the unlocking may be accomplished either by the motivating energy or by a specially contrived implement, a rotatable disk containing numbers, or letters, etc.