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Priority claimed from SE8004003Aexternal-prioritypatent/SE429317B/sv
Application filed by Plm AbfiledCriticalPlm Ab
Publication of FI871442A0publicationCriticalpatent/FI871442A0/fi
Publication of FI871442ApublicationCriticalpatent/FI871442A/fi
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Publication of FI82210BpublicationCriticalpatent/FI82210B/fi
Publication of FI82210CpublicationCriticalpatent/FI82210C/fi