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 Hercules IncfiledCriticalHercules Inc
Priority to FI793068ApriorityCriticalpatent/FI66222C/fi
Publication of FI793068ApublicationCriticalpatent/FI793068A/fi
Publication of FI66222BpublicationCriticalpatent/FI66222B/fi
Application grantedgrantedCritical
Publication of FI66222CpublicationCriticalpatent/FI66222C/fi