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发明名称
Sewer pipe tap
摘要
申请公布号
US1883439(A)
申请公布日期
1932.10.18
申请号
US19300433675
申请日期
1930.03.06
申请人
ADAMS DAVID G
发明人
ADAMS DAVID G.
分类号
F16L41/00;F16L41/08
主分类号
F16L41/00
代理机构
代理人
主权项
地址
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