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 NL7904991Aexternal-prioritypatent/NL7904991A/nl
Priority claimed from NL7907650Aexternal-prioritypatent/NL7907650A/nl
Application filed by Stamicarbon B.V.filedCriticalStamicarbon B.V.
Priority claimed from EP80200591Aexternal-prioritypatent/EP0021537B1/de
Application grantedgrantedCritical
Publication of ATE3116T1publicationCriticalpatent/ATE3116T1/de