US PATENT SUBCLASS 70 / 93
.~.~.~ Links to limit opening

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}
93.~.~.~ Links to limit opening

DEFINITION

Classification: 70/93

(under subclass 91) Devices which provide for a limited opening or positive securement in closed or partly closed condition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

89+, for similar locks applied to windows.

SEE OR SEARCH CLASS

109, Safes, Bank Protection, or a Related Device,

60, for devices to lock the door ajar.