US PATENT SUBCLASS 70 / 138
.~.~.~.~.~.~.~ Combination operable only

Current as of: June, 1999
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70 /   HD   LOCKS

57  DF  SPECIAL APPLICATION {7}
77  DF  .~ For closures {5}
91  DF  .~.~ Door {5}
101  DF  .~.~.~ Swinging door {4}
*  DD  .~.~.~.~ Dead bolts {2}
124  DF  .~.~.~.~.~ Single {5}
135  DF  .~.~.~.~.~.~ Swinging {4}
138.~.~.~.~.~.~.~ Combination operable only

DEFINITION

Classification: 70/138

(under subclass 135) Subject matter wherein the operation of the bolt is effected by a combination mechanism only.