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How the Telephone Works

1938
How the Telephone Works
5.5| 0h7m| en| More Info
Released: 15 June 1938 Released
Producted By: GPO (General Post Office) Film Unit
Country: United Kingdom
Budget: 0
Revenue: 0
Official Website:
Synopsis

Experimental animation produced by GPO to explain telephone systems to the public.

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GPO (General Post Office) Film Unit

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