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 DE2261926Aexternal-prioritypatent/DE2261926C3/de
Priority claimed from IN2375/CAL/73Aexternal-prioritypatent/IN139415B/en
Application filed by DegussafiledCriticalDegussa
Priority to IN267/CAL/1976ApriorityCriticalpatent/IN142520B/en
Publication of IN142520BpublicationCriticalpatent/IN142520B/en
