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 W J Rohrbeck S Nachfolger FafiledCriticalW J Rohrbeck S Nachfolger Fa
Application grantedgrantedCritical
Publication of AT13969BpublicationCriticalpatent/AT13969B/de