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Priority to DE19722211946priorityCriticalpatent/DE2211946C/de
Priority claimed from DE19722211946external-prioritypatent/DE2211946C/de
Publication of DE2211946A1publicationCriticalpatent/DE2211946A1/de
Publication of DE2211946B1publicationCriticalpatent/DE2211946B1/de
Priority to FR7308319Aprioritypatent/FR2175495A5/fr
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Publication of DE2211946CpublicationCriticalpatent/DE2211946C/de