Affinity Technology Inc. - Did you know? Literally, one time! The first mechanical alarm clock could only ring at 4 a.m. invented by Levi Hutchins in 1787. It wasn't until 1876 that
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The first known mechanical alarm clock inventor is Levi Hutchins, an American who, in 1787, invented a person… | Web design services, Web design, Computer companies
TIL : The First alarm clock could only Ring at 4am — Steemit
