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Application filed by Busch-Jaeger Duerener Metallwerke AktiengesellschaftfiledCriticalBusch-Jaeger Duerener Metallwerke Aktiengesellschaft
Priority to AT199733DpriorityCriticalpatent/AT199733B/de
Priority to AT249957Aprioritypatent/AT205579B/de
Application grantedgrantedCritical
Publication of AT199733BpublicationCriticalpatent/AT199733B/de