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Description Inner workings of a "flip clock" where a digital display is driven by a system of gears and motors.
Date
Source http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=3220174
Author E. Cappellari
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30 November 1965

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current18:39, 25 September 2006Thumbnail for version as of 18:39, 25 September 2006500 × 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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