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 US06/203,636external-prioritypatent/US4293305A/en
Priority claimed from US06/305,028external-prioritypatent/US4394126A/en
Priority claimed from IN1112/CAL/81Aexternal-prioritypatent/IN158071B/en
Application filed by Crucible ChemicalfiledCriticalCrucible Chemical
Priority to IN309/CAL/86ApriorityCriticalpatent/IN162129B/en
Publication of IN162129BpublicationCriticalpatent/IN162129B/en