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 SE8401478Aexternal-prioritypatent/SE442777B/sv
Application filed by Lennart Karlsson, Leif KarlssonfiledCriticalLennart Karlsson
Application grantedgrantedCritical
Publication of ATE43432T1publicationCriticalpatent/ATE43432T1/de