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 Otto HoltkampfiledCriticalOtto Holtkamp
Application grantedgrantedCritical
Publication of DK39781CpublicationCriticalpatent/DK39781C/da