US PATENT SUBCLASS 116 / 92
.~.~.~.~.~ Door knob

Current as of: June, 1999
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116 /   HD   SIGNALS AND INDICATORS

67 R  DF  ALARMS {15}
75  DF  .~ Burglar {5}
85  DF  .~.~ Closure operated {1}
86  DF  .~.~.~ Door and window {5}
91  DF  .~.~.~.~ Clockwork bell {3}
92.~.~.~.~.~ Door knob

DEFINITION

Classification: 116/92

(under subclass 91) Devices in which the train of clock-work is controlled by the motion of the doorknob.

SEE OR SEARCH THIS CLASS, SUBCLASS:

9, for doorknob controlled locks.

96, for doorknob controlled single stroke bells.

97, for doorknob control alarms.