申请人 |
POHANG IRON & STEEL CO. LTD., POHANG CITY, KYUNG SANG BOOK, KR;RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POHANG CITY, KYUNG SANG BOOK, KR |
发明人 |
CHUNG, JONG, SHIK, RESEARCH INSTITUTE INDUSTRIAL, POHANG CIY, KYONG SANG BOOK-DO 790-330, KR;LEE, DEOG, SEONG, RESEARCH INSTITUTE INDUSTRIAL, POHANGCIGTY, KYONG SANG BOOK-DO 790-330, KR;KIM, BYUNG, KEE, RESEARCH INSTITUTE OF INDUSTRIAL, POHANG CITY, KYONG SANG BOOK-DO 790-330, KR;YANG, O BONG, RESEARCH INSTITUTE OF INDUSTRIAL, POHANG CITTY, KYONG SANG BOOK-DO 790-330, KR |