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 Lars Gunnar SergmanfiledCriticalLars Gunnar Sergman
Priority to BE598496ApriorityCriticalpatent/BE598496A/en
Publication of BE598496ApublicationCriticalpatent/BE598496A/en