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 CH1139560Aexternal-prioritypatent/CH447198A/de
Priority claimed from CH407561Aexternal-prioritypatent/CH415684A/de
Application filed by Ciba GeigyfiledCriticalCiba Geigy
Publication of BE609053ApublicationCriticalpatent/BE609053A/fr