(under the class definition) Device comprising a means acting only to produce a perceptible, e.g., audible or visual manifestation of a position of a closure.
SEE OR SEARCH CLASS
109, Safes, Bank Protection, or a Related Device,
38, for a device of that class combined with a signal or indicator, particularly subclass 43 for one which is initiated by closure movement.
116, Signals and Indicators,
85, for closure operated burglar alarms, i.e., alarms to announce unauthorized attempts to use the closure-barred opening, and subclass 100 for structurally installed closure operated alarms to indicate the presence of a visitor, or combined with a fire alarm box to give a local alarm when the box closure has been opened, e.g., to actuate the fire alarm. 160, Flexible or Portable Closure, Partition, or Panel,
10, for a signal or indicator combined with a closure of that class.
200, Electricity: Circuit Makers and Breakers,
61.62, for a closure or closure operator actuated switch, e.g., to actuate a signalling circuit.
340, Communications: Electrical,
545.1+, for electrical communications, e.g., alarm, automatically responsive to the condition of a closure.