When did electric buzzer made?

Answer when did electric buzzer made?

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Who invented the electric buzzer?

Who inveneted the electric buzzer?

How to Make a "Buzzer Finger" Without a Real Buzzer?

Hello, this tutorial will show you how to make the original quiz-show buzzer on your finger. This activity may sound hard. but really, it's not that hard at all! Its a cool thing to do when you wan... Read More »

When was the electric fence made?

Although electric fences were described by Mark Twain in 1889, the earliest known use of an electric fence was by William "Bill" Gallagher Sr., an inventor from New Zealand who made one from a car'... Read More »