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
Priority claimed from DE1901127265Dexternal-prioritypatent/DE127265C/de
Application filed by H W KnollfiledCriticalH W Knoll
Application grantedgrantedCritical
Publication of AT12390BpublicationCriticalpatent/AT12390B/de