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经营范围
发明名称
Packing for reinforced concrete pipe joints
摘要
申请公布号
GB412467(A)
申请公布日期
1934.06.28
申请号
GB19330028615
申请日期
1933.10.16
申请人
ING. VACLAV DUBEN
发明人
分类号
F16L51/00
主分类号
F16L51/00
代理机构
代理人
主权项
地址
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