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 GB34146/66Aexternal-prioritypatent/GB1199917A/en
Application filed by Centralsug AbfiledCriticalCentralsug Ab
Publication of FI52758BpublicationCriticalpatent/FI52758B/fi
Application grantedgrantedCritical
Publication of FI52758CpublicationCriticalpatent/FI52758C/sv