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Application filed by Howaldtswerke Deutsche WerftfiledCriticalHowaldtswerke Deutsche Werft
Priority to FI439/74ApriorityCriticalpatent/FI62177C/fi
Publication of FI43974A7publicationCriticalpatent/FI43974A7/fi
Application grantedgrantedCritical
Publication of FI62177BpublicationCriticalpatent/FI62177B/fi
Publication of FI62177CpublicationCriticalpatent/FI62177C/fi