Fil:Analog clock with digital display.png

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Beskrivelse Inner workings of a "flip clock" where a digital display is driven by a system of gears and motors.
Dato
Kilde http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=3220174
Forfatter E. Cappellari
Tilladelse
(Genbrug af denne fil)
United States Patent illustration


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nuværende25. sep. 2006, 20:39Miniature af versionen fra 25. sep. 2006, 20:39500 × 435 (51 KB)Epolk{{Information |Description=Inner workings of a "flip clock" where a digital display is driven by a system of gears and motors. |Source=http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=3220174 |Date=November 30, 1965 |Author=E. Cappellari |Permission

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