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Application filed by Hendrik Filippo, Pancras Schoonenberg, Naamlooze Vennootschap PhilipfiledCriticalHendrik Filippo
Publication of CH73139ApublicationCriticalpatent/CH73139A/de
Einrichtung zur Herstellung von photographischen AEinrichtung zur Herstellung von photographischen Aufnahmen von Flugzeugen aus. ufnahmen von Flugzeugen aus.