申请人 |
HITACHI, LTD., TOKIO/TOKYO, JP;HITACHI CONSTRUCTION MACHINERY CO., LTD., TOKIO/TOKYO, JP |
发明人 |
HAZAKI, EIICHI, TSUCHIURA-SHI,, JP;YAMADA, OSAMU, KATSUTA-SHI, JP;NAKAIZUMI, YASUSHI, KATSUTA-SHI, JP;HOSOKI, SHIGEYUKI, HACHIOJI-SHI, JP;HOSAKA, SUMIO, NISHITAMA-GUN, TOKYO, JP;HASHIMOTO, AKIRA, TSUCHIURA-SHI, JP |