File:Campanello - Mechanical ring bell.svg

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English: Scheme of a ring bell as found in an advertisement from 1921. It is a mechanic ring bell installation that imitates an electro-mechanic ring bell from the same time.
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Source File:'O gallo e 'a gallina.djvu page 24
Author Cav. Emilio Gennarelli & C - Publication

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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.


This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

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current20:37, 18 October 2014Thumbnail for version as of 20:37, 18 October 2014488 × 348 (45 KB)C.R. (talk | contribs)User created page with UploadWizard

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