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Priority claimed from DEL85653Dexternal-prioritypatent/DE616026C/de
Application filed by Lorenz C AgfiledCriticalLorenz C Ag
Application grantedgrantedCritical
Publication of AT140679BpublicationCriticalpatent/AT140679B/de
Priority claimed from DEL90023Dexternal-prioritypatent/DE659836C/de