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发明名称
FOERFARANDE FOER ATT SPRAECKA BERG ELLER MOTSVARANDE MATERIAL
摘要
申请公布号
FI931744(A0)
申请公布日期
1993.04.16
申请号
FI19930001744
申请日期
1993.04.16
申请人
BRUCE, HOWARD D.
发明人
BRUCE, HOWARD D.
分类号
E04G23/08;E21C37/04;E21C37/06
主分类号
E04G23/08
代理机构
代理人
主权项
地址
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