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 Bautzner Ind M B HfiledCriticalBautzner Ind M B H
Application grantedgrantedCritical
Publication of AT67978BpublicationCriticalpatent/AT67978B/de