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 DE2251850Aexternal-prioritypatent/DE2251850C3/de
Application filed by Pfeiffer Ohler Eisen TheobfiledCriticalPfeiffer Ohler Eisen Theob
Priority to AT919775ApriorityCriticalpatent/AT344097B/de
Publication of ATA919775ApublicationCriticalpatent/ATA919775A/de
Application grantedgrantedCritical
Publication of AT344097BpublicationCriticalpatent/AT344097B/de