申请人 |
NIHON DENGYO KOSAKU CO. LTD., TOKIO/TOKYO, JP;NGK SPARK PLUG CO., LTD., NAGOYA, AICHI, JP |
发明人 |
HATANAKA, HIROSHI, FUJIMI-SHI, SAITAMA-KEN, JP;OHYA, KANJI, C/O NGK SPARK PLUG CO. LTD., NAGOYA-SHI, AICHI-KEN, JP;NISHIKI, MASAHIRO, NGK SPARK PLUG CO. LTD., NAGOYA-SHI, AICHI-KEN, JP |