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经营范围
发明名称
Rail de chemin de fer
摘要
申请公布号
FR974506(A)
申请公布日期
1951.02.23
申请号
FRD974506
申请日期
1948.11.03
申请人
发明人
BURKHARDT GEORGE RANDOLPH
分类号
E01B5/02
主分类号
E01B5/02
代理机构
代理人
主权项
地址
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