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 GB27562/61Aexternal-prioritypatent/GB979994A/en
Priority claimed from FI141162Aexternal-prioritypatent/FI40008B/fi
Application filed by May & Baker LtdfiledCriticalMay & Baker Ltd
Publication of FI40009BpublicationCriticalpatent/FI40009B/fi
Application grantedgrantedCritical
Publication of FI40009CpublicationCriticalpatent/FI40009C/fi