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经营范围
发明名称
Traverse de chemin de fer
摘要
申请公布号
FR951446(A)
申请公布日期
1949.10.25
申请号
FRD951446
申请日期
1944.01.13
申请人
DYNAMIT-ACTIEN-GESELLSCHAFT VORMALS ALFRED NOBEL & CO.
发明人
分类号
E01B3/46
主分类号
E01B3/46
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