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发明名称
Stuetzwand
摘要
申请公布号
DE717640(C)
申请公布日期
1942.02.19
申请号
DE1938SC17297D
申请日期
1938.12.23
申请人
ALFONS SCHROETER
发明人
SCHROETER ALFONS
分类号
E01D19/02;E02D29/02
主分类号
E01D19/02
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代理人
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