Who inveneted the electric buzzer?

Answer Yes

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When did electric buzzer made?

Who invented 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 vacuum cleaner first inveneted?

That depends on the distance to the vacuum cleaner. The closer, the louder.