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 Dansk Apparatfabrik Ved R & HfiledCriticalDansk Apparatfabrik Ved R & H
Priority to DK286049ApriorityCriticalpatent/DK74231C/en
Application grantedgrantedCritical
Publication of DK74231CpublicationCriticalpatent/DK74231C/en