(under subclass 75) Devices in which the signal is actuated by the opening or attempted opening of a door, window, box-cover, shutter-slat, or other closure.
SEE OR SEARCH CLASS
49, Movable or Removable Closures,
13+, for signaling means with structures of the class type.
160, Flexible or Portable Closure, Partition, or Panel,
10, for signaling means with structure of the class type. 200, Electricity: Circuit Makers and Breakers, appropriate subclasses, for electrical switching devices, particularly
61.62, for closure operated or accessory operated switches.
337, Electricity: Electrothermally or Thermally Actuated Switches,
205, for signaling means with structure of the class type.
340, Communications: Electrical,
545.1+, for similar subject matter where the signal is electrically actuated.
