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called Telefonbillet which allowed for a few minutes of talking time. In 1899, it was replaced by a coin-operated telephone.

William Gray is credited with inventing the coin payphone in the United States in 1889, and George A. Long was its developer.

In the UK, the creation of a national network of telephone boxes commenced in 1920, beginning with the K1 model which was made of concrete; however, the city of Kingston upon Hull

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