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 Kai WarmingfiledCriticalKai Warming
Application grantedgrantedCritical
Publication of DK48844CpublicationCriticalpatent/DK48844C/da
DK48844D1933-05-201933-05-20Apparat (Drænplov) til Fremstilling af stabile, vandførende Ledninger i Jorden uden Benyttelse af faste Rørvægge.
DK48844C
(da)