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经营范围
发明名称
Perfectionnements aux couvercles et châssis de bouches d'accès
摘要
申请公布号
FR1080858(A)
申请公布日期
1954.12.14
申请号
FRD1080858
申请日期
1953.06.04
申请人
发明人
ELKINGTON VIVIAN
分类号
E02D29/14
主分类号
E02D29/14
代理机构
代理人
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地址
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