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 Louis Adolph HoffmannfiledCriticalLouis Adolph Hoffmann
Priority to AT1001767ApriorityCriticalpatent/AT288129B/en
Application grantedgrantedCritical
Publication of AT288129BpublicationCriticalpatent/AT288129B/en