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Application filed by Contraves AgfiledCriticalContraves Ag
Priority to CH229870ApriorityCriticalpatent/CH520916A/en
Priority to DE19712105016prioritypatent/DE2105016C3/en
Priority to SE199571Aprioritypatent/SE358727B/xx
Priority to FR7105320Aprioritypatent/FR2078693A5/fr
Publication of CH520916ApublicationCriticalpatent/CH520916A/en