MACHINE DE PERCAGE PROFOND
ROTARU STEFAN,RO, RADULESCU GHEORGHE,RO, OSVALD CONSTANTIN D.,RO, BEREA EMIL,RO, ARMANO VIOREL,RO, DRAGHICESCU CRISTIAN,RO, BENI MIHAI,RO
Year of Publication 20.12.1985
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Year of Publication 20.12.1985
Patent