US PATENT SUBCLASS 70 / 278.7
.~.~.~ And details of blocking system (e.g., linkage, latch, pawl, spring)

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}
278.7.~.~.~ And details of blocking system (e.g., linkage, latch, pawl, spring)

DEFINITION

Classification: 70/278.7

And details of blocking system (e.g., linkage, latch, pawl, spring):

(under subclass 277) Subject matter in which the design of the structural components determine the operation of the mechanism.