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Gevaert Photo Producten NV
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Gevaert Photo Producten NV
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Verfahren zur Synchronkontrolle von Ton- und Bildaufnahmen durch von ablaufenden Bildstreifen gesteuerte AEnderung der Intensitaet der Aufzeichnungsbelichtung
Löschkopf aus einem permanentmagnetischen Material sowie Magnetisierungsvorrichtung mit einem bewickelten Kern mit Polstücken aus hochpermeablem Material zur Dauermagnetisierung eines Löschkopfes