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 Paavo Samuel ValkamafiledCriticalPaavo Samuel Valkama
Priority to FI872141ApriorityCriticalpatent/FI78533C/fi
Publication of FI872141A0publicationCriticalpatent/FI872141A0/fi
Publication of FI872141ApublicationCriticalpatent/FI872141A/fi
Publication of FI78533BpublicationCriticalpatent/FI78533B/fi
Application grantedgrantedCritical
Publication of FI78533CpublicationCriticalpatent/FI78533C/fi