申请人 |
NGK INSULATORS, LTD., NAGOYA, AICHI, JP;INSTITUTE OF TECHNOLOGY PRECISION ELECTRICAL DISCHARGE WORK'S, KAWASAKI, KANAGAWA, JP |
发明人 |
HATTORI, ISAO, 30, AZA-INOWARI, MINATO-KU, NAGOYA-CITY, AICHI PREF., 455, JP;FUTAMURA, SHOJI, C/O INSTITUTE OF TECHNOLOGY, KAWASAKI-CITY, KANAGAWA-PREF., 211, JP |