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 Paul Emil Franz KruegerfiledCriticalPaul Emil Franz Krueger
Priority to DK98346ApriorityCriticalpatent/DK67781C/en
Application grantedgrantedCritical
Publication of DK67781CpublicationCriticalpatent/DK67781C/en