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Projection clocks were first invented in the early 1900's and were known then as “Ceiling Clocks” for the fact they projected an image of the old-fashioned clock dial and hands onto a ceiling. A patent was filed in the United States in 1940 regarding a method of projecting an enlarged image of the clock hands and numerals onto a ceiling or wall. Since that time, modern technology has allowed projection clocks to a convert to digital status.