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Application filed by Valtion TeknillinenfiledCriticalValtion Teknillinen
Priority to FI891067ApriorityCriticalpatent/FI81419C/fi
Publication of FI891067A0publicationCriticalpatent/FI891067A0/fi
Application grantedgrantedCritical
Publication of FI81419BpublicationCriticalpatent/FI81419B/fi
Publication of FI81419CpublicationCriticalpatent/FI81419C/fi
FI891067A1989-03-071989-03-07Foerfarande och anordning foer att foerhindra tillfrysning av flytande medium i ett vaetskeutrymme saosom i ett roersystem.
FI81419C
(fi)