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
Application filed by Bengtsson Sigurd WfiledCriticalBengtsson Sigurd W
Priority to SE655967ApriorityCriticalpatent/SE302415B/xx
Priority to NO179868Aprioritypatent/NO120620B/no
Priority to GB2239568Aprioritypatent/GB1183556A/en
Publication of SE302415BpublicationCriticalpatent/SE302415B/xx