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Priority claimed from AT67972Aexternal-prioritypatent/AT324172B/de
Application filed by H UselfiledCriticalH Usel
Priority to DK69077ApriorityCriticalpatent/DK139918B/da
Publication of DK69077ApublicationCriticalpatent/DK69077A/da
Publication of DK139918BpublicationCriticalpatent/DK139918B/da
Application grantedgrantedCritical
Publication of DK139918CpublicationCriticalpatent/DK139918C/da