METHOD FOR PIERCING SEAMLESS METALLIC TUBE AND PIERCING DEVICE
URAYAMA TAKESHI, WADA NOBUHIKO, YAMAKAWA TOMIO, WANAKI JIYUICHI, OKUYAMA KO, SHIMODA KAZUMUNE, KITANI SHIGERU
Year of Publication 04.03.1997
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Year of Publication 04.03.1997
Patent