申请人 |
PUB WORKS RES INST MINISTRY OF CONSTR;DOBOKU KENKYU CENTER;OKUMURA CORP;KUMAGAI GUMI CO LTD;HIROSE & CO LTD;TEIJIN LTD |
发明人 |
MIKI HIROSHI;HAYASHI YOSHIYUKI;SENDA SHOHEI;MASUI HITOSHI;HORIUCHI HARUO;MORI KUNIO;NAGASAWA TAKESHI;KUMADA TETSUNORI;OKAMURA YASUHIRO |