US PATENT SUBCLASS 70 / 333 A
.~.~.~ Hidden or covered dial

Current as of: June, 1999
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70 /   HD   LOCKS

266  DF  OPERATING MECHANISM {6}
286  DF  .~ Combination {8}
333 R  DF  .~.~ Tampering prevention or attach defeating {2}
333 A.~.~.~ Hidden or covered dial

Unofficial Alpha Subclasses: R A

DEFINITION

Classification: 70/333

(under subclass 286) Mechanisms to prevent tampering with the operating mechanism or any static means designed to prevent an attack by an unauthorized force or by destructive heat.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1.5+, for devices which upon attack by an unauthorized force impose an additional impediment to the operation of a lock.

416+, for similar devices intended for association with key locks.