How old was Chester Greenwood when he devised the idea for the earmuff?

Answer

15 years old

Chester Greenwood was only 15 years old when the idea for his invention struck him while he was ice skating.

How old was Chester Greenwood when he devised the idea for the earmuff?

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Ear Muffs: Where did they come from? | Stuff of Genius - YouTube

The history of how earmuffs were invented by a Maine teenager

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