申请人 |
NIPPON OXYGEN CO LTD;SENJU METAL INDUSTRY CO |
发明人 |
KON SHINJI NIPPON SANSO CORPOR;ARIGA KEIKI NIPPON SANSO CORPO;INAMURA TSUTOMU NIPPON SANSO C;SATO TOYOYUKI NIPPON SANSO COR;OHTA HIDETOSHI NIPPON SANSO CO;HIRAO AKITOSHI NIPPON SANSO CO;OKUNO TETSUYA SENJU METAL INDU;IINO TOMOHIKO SENJU METAL INDU |