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Priority to DE19712113105priorityCriticalpatent/DE2113105C/de
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Publication of DE2113105A1publicationCriticalpatent/DE2113105A1/de
Publication of DE2113105B2publicationCriticalpatent/DE2113105B2/de
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Publication of DE2113105CpublicationCriticalpatent/DE2113105C/de