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 SE7712674Aexternal-prioritypatent/SE408762B/sv
Priority claimed from SE7801161Aexternal-prioritypatent/SE411848B/sv
Priority claimed from SE7809646Aexternal-prioritypatent/SE413466B/sv
Priority claimed from FI783385Aexternal-prioritypatent/FI70379C/fi
Application filed by Rader CompaniesfiledCriticalRader Companies
Publication of FI814203LpublicationCriticalpatent/FI814203L/fi
Application grantedgrantedCritical
Publication of FI70380BpublicationCriticalpatent/FI70380B/fi
Publication of FI70380CpublicationCriticalpatent/FI70380C/fi