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Class Information
Number: 116/73
Name: Signals and indicators > Alarms > Operation counting
Description: Devices include arrangements for giving an alarm when some device--as a shaft, wheel, or work-carriage--rotates or moves a predetermined number of times.

Patents under this class:

Patent Number Title Of Patent Date Issued
4856520 Tanner's platform Aug. 15, 1989
3960105 Sound making system Jun. 1, 1976

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