The History of the Wrist Watch Alarm : Part one Eterna and the Durrenstein Brothers

  
It is believed that wrist watch alarms were first produced in the early 1900s by Eterna. The interesting thing is that they did not actually develop the design – it was merely licensed from the German patent holders, The Durrenstein brothers. Their idea was patented in 1899, under Swiss patent # 17,104. Eterna did eventually patent an update to the original alarm watch design, # 42,203, but it is erroneously described as an actual alarm mechanism patent. To learn more about all this, be sure to check out the video below.

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