Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FI873713Aexternal-prioritypatent/FI873713A0/fi
Application filed by O Pinomaa KyfiledCriticalO Pinomaa Ky
Priority to FI874963ApriorityCriticalpatent/FI874963A0/fi
Publication of FI874963A0publicationCriticalpatent/FI874963A0/fi
Priority to FI880305Aprioritypatent/FI80286C/fi
Priority to US07/232,154prioritypatent/US5021476A/en
Priority to EP19880113257prioritypatent/EP0304767A3/en