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 Elise Boden F Tonn, Willi SchraderfiledCriticalElise Boden F Tonn
Application grantedgrantedCritical
Publication of DK43850CpublicationCriticalpatent/DK43850C/da