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 Otto Alfred Dr BeckerfiledCriticalOtto Alfred Dr Becker
Priority to AT767258ApriorityCriticalpatent/AT214404B/de
Application grantedgrantedCritical
Publication of AT214404BpublicationCriticalpatent/AT214404B/de