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Priority claimed from DE19732314778external-prioritypatent/DE2314778A1/de
Priority claimed from AT144674Aexternal-prioritypatent/AT334731B/de
Application filed by Pickhardt & SiebertfiledCriticalPickhardt & Siebert
Publication of ATA67776ApublicationCriticalpatent/ATA67776A/de
Application grantedgrantedCritical
Publication of AT341330BpublicationCriticalpatent/AT341330B/de