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 |
LEE, KWANG SAE A-106, WOO SHIN APT., BUSAN CITY, KR;YOUM, YOUNG IL 6-905, PROFESSOR APT., KYONG SANG BOOK-DO, KR |