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 Anton Dipl Ing Dr GrzywienskifiledCriticalAnton Dipl Ing Dr Grzywienski
Application grantedgrantedCritical
Publication of AT196317BpublicationCriticalpatent/AT196317B/de