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Priority claimed from DE2932406Aexternal-prioritypatent/DE2932406C2/de
Application filed by Anton HeggenstallerfiledCriticalAnton Heggenstaller
Publication of FI812211LpublicationCriticalpatent/FI812211L/fi
Application grantedgrantedCritical
Publication of FI70684BpublicationCriticalpatent/FI70684B/fi
Publication of FI70684CpublicationCriticalpatent/FI70684C/fi