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经营范围
发明名称
Concrete sewers
摘要
申请公布号
GB973326(A)
申请公布日期
1964.10.21
申请号
GB19620045512
申请日期
1962.11.30
申请人
ALFRED HORN
发明人
分类号
E03F3/04
主分类号
E03F3/04
代理机构
代理人
主权项
地址
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