File:1888 A-C-KREBS=système Krebs de téléphone pour les avertisseurs du service incendie de la ville de Paris.jpg

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Description
Français : 1888 A-C-KREBS : système Krebs de téléphone pour les avertisseurs du service incendie de la ville de Paris (brevet n°192.070). Communication à l'académie des Sciences le 1888-09-08.
English: 1888 A-C-KREBS: Krebs telephone system for the fire department alarms of the city of Paris (patent n ° 192.070). Communication to the Academy of Sciences on 1888-09-08.
Date
Source Carte postale d'époque
Author Carte postale d'époque

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Public domain

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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1888 A-C-KREBS: Krebs telephone system for the fire department alarms of the city of Paris

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27 July 1888Gregorian

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