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 IN448/CAL/73Aexternal-prioritypatent/IN138595B/en
Priority claimed from IT49835/74Aexternal-prioritypatent/IT1048280B/it
Application filed by Snam ProgettifiledCriticalSnam Progetti
Priority to IN629/CAL/1975ApriorityCriticalpatent/IN140840B/en
Publication of IN140840BpublicationCriticalpatent/IN140840B/en