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Priority claimed from DEL39808Uexternal-prioritypatent/DE1925532U/de
Priority claimed from DEL39806Uexternal-prioritypatent/DE1925530U/de
Application filed by Striegel Und Rechenfabrik MaxfiledCriticalStriegel Und Rechenfabrik Max
Application grantedgrantedCritical
Publication of AT257680BpublicationCriticalpatent/AT257680B/de