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Priority claimed from CH1894668Aexternal-prioritypatent/CH501650A/de
Priority claimed from CH1609769Aexternal-prioritypatent/CH521978A/de
Application filed by Циба-Гейги Аг (Фирма)filedCriticalЦиба-Гейги Аг (Фирма)
Application grantedgrantedCritical
Publication of SU455536A3publicationCriticalpatent/SU455536A3/ru