申请人 |
HITACHI CONSTRUCTION MACHINERY CO., LTD., TOKIO/TOKYO, JP |
发明人 |
IZUMI, EIKI, NIIHARI-GUN IBARAGI-KEN, JP;TANAKA, YASUO, TSUKUBA-SHI IBARAGI-KEN, JP;WATANABE, HIROSHI, USHIKU-SHI IBARAGI-KEN, JP;YOSHIDA, KUNIAKI, TSUCHIURA-SHI IBARAGI-KEN, JP;HIRATA, TOICHI, USHIKU-SHI IBARAGI-KEN, JP |