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
Application filed by Inst Sverkhtverdykh MatfiledCriticalInst Sverkhtverdykh Mat
Priority to IN151/CAL/1976ApriorityCriticalpatent/IN144540B/en
Publication of IN144540BpublicationCriticalpatent/IN144540B/en