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Priority claimed from DEE20302Aexternal-prioritypatent/DE1201016B/de
Application filedfiledCritical
Priority to FR957264ApriorityCriticalpatent/FR84931E/fr
Priority claimed from CH1565563Aexternal-prioritypatent/CH411251A/de
Application grantedgrantedCritical
Publication of FR84931EpublicationCriticalpatent/FR84931E/fr