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
Application filed by Kauko Antero HaukkafiledCriticalKauko Antero Haukka
Priority to FI901535ApriorityCriticalpatent/FI901535A/fi
Publication of FI901535A0publicationCriticalpatent/FI901535A0/fi
Priority to FI910989Aprioritypatent/FI87819B/fi
Publication of FI901535ApublicationCriticalpatent/FI901535A/fi