US PATENT SUBCLASS 116 / 9
.~.~.~ Door-knob controlled

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

2  DF  COMBINED FUNCTIONS {3}
6  DF  .~ Burglar alarms {4}
8  DF  .~.~ Locks {2}
9.~.~.~ Door-knob controlled {1}
10  DF  .~.~.~.~> Combined knob and bell

DEFINITION

Classification: 116/9

(under subclass 8) Devices in which the alarm is controlled by the movement of the doorknob.

SEE OR SEARCH THIS CLASS, SUBCLASS:

92, for door knob operated clockwork bell.

96, for door knob operated single-stroke bell.

97, for door knob operated alarm.