Support element for mine roadways and tunnels, having support sections and at least one joint. The joint consists of a support-section part which has reduced bending resistance. <IMAGE>
申请公布号
DE3908970(C1)
申请公布日期
1990.08.23
申请号
DE19893908970
申请日期
1989.03.18
申请人
BOCHUMER EISENHUETTE HEINTZMANN GMBH & CO KG, 4630 BOCHUM, DE
