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Priority claimed from CH1553969Aexternal-prioritypatent/CH499417A/fr
Priority claimed from CH1471370Aexternal-prioritypatent/CH517611A/fr
Application filed by Vevey Atel Const MecfiledCriticalVevey Atel Const Mec
Publication of ATA1012570ApublicationCriticalpatent/ATA1012570A/de
Application grantedgrantedCritical
Publication of AT330237BpublicationCriticalpatent/AT330237B/de