DK43526C -
Procedure for Combined Use of Film and Telegraph in Recording and Reproduction of Images together with the Images Accompanying Speech or the like.
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Procedure for Combined Use of Film and Telegraph in Recording and Reproduction of Images together with the Images Accompanying Speech or the like.
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Application filed by Valdemar Dr PoulsenfiledCriticalValdemar Dr Poulsen
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Publication of DK43526CpublicationCriticalpatent/DK43526C/en
DK43526D1930-02-211930-02-21
Procedure for Combined Use of Film and Telegraph in Recording and Reproduction of Images together with the Images Accompanying Speech or the like.
DK43526C
(en)