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 Julius Heyde, Anna GuthfiledCriticalJulius Heyde
Priority to AT11804DpriorityCriticalpatent/AT11804B/de
Application grantedgrantedCritical
Publication of AT11804BpublicationCriticalpatent/AT11804B/de