申请人 |
NIIGATA ENGINEERING CO., LTD.;THE NIPPON ROAD CO., LTD. |
发明人 |
IKEDA, HACHIRO;MIYAMOTO, NORIAKI;UMEDA, RYOEI;YASU, HIDENORI;FUKUKAWA, MITSUO;MASUYAMA, YUKIEI;KINOSHITA, SHOJI;TAKAGI, YUKIO;GOCHO, TOMOHIRO;GOTO, FUMIO;ISHII, AKIO;OGAWA, TETSUO;HASEGAWA, YOSHUN;HIRONAKA, KEITARO;OGOSHI, YASUHIRO |