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Priority claimed from CH7958859Aexternal-prioritypatent/CH376028A/de
Priority claimed from FR828067Aexternal-prioritypatent/FR1258562A/fr
Application filed by Werner KuenzlifiledCriticalWerner Kuenzli
Application grantedgrantedCritical
Publication of BE619738QpublicationCriticalpatent/BE619738Q/fr