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Class Information
Number: 116/90
Name: Signals and indicators > Alarms > Burglar > Closure operated > Door and window > Gear and friction wheel
Description: Signals and alarms actuated by gear or friction wheels attached to the moving door or window and in contact with the floor or window frame.

Patents under this class:

Patent Number Title Of Patent Date Issued
4106427 Alarm system Aug. 15, 1978

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