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Filing date
Publication date
Application filed by Hermann ZahnfiledCriticalHermann Zahn
Priority to AT243558ApriorityCriticalpatent/AT216800B/de
Priority to DE1958F0014955prioritypatent/DE1770034U/de
Priority to CH6835259Aprioritypatent/CH366413A/de
Priority to BE574764Aprioritypatent/BE574764A/fr
Application grantedgrantedCritical
Publication of AT216800BpublicationCriticalpatent/AT216800B/de