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Priority to DE19757525586priorityCriticalpatent/DE7525586U/de
Priority to DE19752535990prioritypatent/DE2535990C2/de
Priority claimed from DE19752535990external-prioritypatent/DE2535990C2/de
Publication of DE2535990B1publicationCriticalpatent/DE2535990B1/de
Publication of DE2535990A1publicationCriticalpatent/DE2535990A1/de
Application grantedgrantedCritical
Publication of DE2535990C2publicationCriticalpatent/DE2535990C2/de