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 Jens Anton EfsenfiledCriticalJens Anton Efsen
Priority to DK117557ApriorityCriticalpatent/DK89812C/en
Application grantedgrantedCritical
Publication of DK89812CpublicationCriticalpatent/DK89812C/en