US PATENT SUBCLASS 70 / 438
.~.~ Contactual feeler

Current as of: June, 1999
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70 /   HD   LOCKS

431  DF  PARTS, ATTACHMENTS, ACCESSORIES AND ADJUNCTS {9}
432  DF  .~ Condition indicators {5}
438.~.~ Contactual feeler

DEFINITION

Classification: 70/438

(under subclass 432) Devices readily accessible from the exterior of the lock operating mechanism and controlled thereby so that upon contacting of the device by the hand or finger it is possible to immediately determine the condition of the lock operating mechanism.