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经营范围
发明名称
Procédé de protection des tuyaux de canalisation plus spécialement en fer
摘要
申请公布号
FR697047(A)
申请公布日期
1931.01.10
申请号
FRD697047
申请日期
1930.06.02
申请人
J. & OTTO KREBBER G. M. B. H.
发明人
分类号
F16L58/16
主分类号
F16L58/16
代理机构
代理人
主权项
地址
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