US PATENT SUBCLASS 116 / 97
.~.~.~.~ 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}
97.~.~.~.~ Door knob

DEFINITION

Classification: 116/97

(under subclass 86) Devices in which the turning of the knob gives two or more strokes upon the bell.

SEE OR SEARCH THIS CLASS, SUBCLASS:

9, for combined burglar alarm of the doorknob controlled type.

92, for doorknob controlled clockwork bell.

96, for doorknob controlled single stroke bell.