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Application filedfiledCritical
Priority to DD16340972ApriorityCriticalpatent/DD102219A2/xx
Priority to DE19722257588prioritypatent/DE2257588C3/de
Priority to CH1736672Aprioritypatent/CH593495A5/xx
Priority to FR7245308Aprioritypatent/FR2164702A1/fr
Publication of DD102219A2publicationCriticalpatent/DD102219A2/xx