申请人 |
OBAYASHI ROAD CORP;SEIKITOKYU KOGYO CO LTD;TAISEI ROTEC CORP;TOA DORO KOGYO CO LTD;MAEDA ROAD CONSTR CO LTD;NIIGATA ENG CO LTD |
发明人 |
YASU HIDENORI;INAGAKI TATSUOKI;SUGATA SO;MATSUURA CHIAKI;HASEBE KATSURO;IZAWA TATSUJI;MORI AKIO;WATANABE NOBUYUKI;GOTO FUMIO;UCHIYAMA SHINICHIRO |