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Pablo Picasso quote: Work is a necessity for man. Man invented the alarm...
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Smart Store - The first alarm clock could only ring at one time. Interesting fact about alarm clocks and their invention. The early prototype of an alarm clock was invented by the
Who invented the alarm clock? - Handy Answer Book
Five ancient Greek inventions that are remarkably still used today - Greek Herald
Ancient Alarm Clock Invented by Plato (4th century BCE) - Ancient Technology
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Inventor of the First American Alarm clock: Concord New Hampshire's Levi Hutchins (1761-1855) | Cow Hampshire