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Application filed by Albert BuechifiledCriticalAlbert Buechi
Publication of CH77942ApublicationCriticalpatent/CH77942A/de
CH77942A1917-10-021917-10-02Verschlußeinrichtung an photographischen Kopierkasten für Massenarbeit, insbesondere zur Herstellung von Postkarten
CH77942A
(de)