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经营范围
发明名称
Adjustable cleanout plug
摘要
申请公布号
US1832183(A)
申请公布日期
1931.11.17
申请号
US19300435527
申请日期
1930.03.13
申请人
CHERNE ANDREW F
发明人
CHERNE ANDREW F.
分类号
E03C1/122
主分类号
E03C1/122
代理机构
代理人
主权项
地址
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