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How the Telephone Works

How the Telephone Works

How the Telephone Works(1938)
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How the Telephone Works

1938-06-15

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Documentary

•

7 minutes

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

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Status

Released

Budget

-

Revenue

-

Original Language

English

Production Companies

GPO (General Post Office) Film Unit - GB

Production Countries

United Kingdom