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 SE02151/68Aexternal-prioritypatent/SE331008B/xx
Application filed by Graenges Essem AbfiledCriticalGraenges Essem Ab
Application grantedgrantedCritical
Publication of FI55249BpublicationCriticalpatent/FI55249B/en
Publication of FI55249CpublicationCriticalpatent/FI55249C/en