Inventor
KUMAI FUMITAKA
JP4 patents
Patents
4 patentsUS4786206ANov 22, 1988
Lining tunnel wall made by shield type tunnel excavator
TEKKEN CONSTR CO24 citations80
US4799824AJan 24, 1989
Method of making covering wall of tunnel made by shield type excavator
TEKKEN CONSTR CO17 citations78
US4863313ASep 5, 1989
Method for lining tunnel wall formed by shield excavation
TEKKEN CONSTR CO4 citations60
US4913587AApr 3, 1990
Form assembly for making covering wall of tunnel made by shield type excavator
TEKKEN CONSTR CO2 citations59