EXPANSIBLE MANDREL
KHAZHINSKIJ GRIGORIJ M,SU, SAVOSTYANOV EVGENIJ A,SU, NIKITINA LIDIYA ,SU, TAVASTSHERNA RYURIK ,SU, GOLTSOV VYACHESLAV ,SU, RUDNITSKIJ MIKHAIL YA,SU, SURIN YURIJ S,SU
Year of Publication 30.12.1977
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Year of Publication 30.12.1977
Patent