US PATENT SUBCLASS 70 / 290
.~.~.~ Labyrinthian passage

Current as of: June, 1999
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70 /   HD   LOCKS

266  DF  OPERATING MECHANISM {6}
286  DF  .~ Combination {8}
289  DF  .~.~ Complex movement or puzzle type {1}
290.~.~.~ Labyrinthian passage

DEFINITION

Classification: 70/290

(under subclass 289) Subject matter wherein complex movement or puzzle effect is obtained by the employment of a labyrinthian passage.