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经营范围
发明名称
Trap plug
摘要
申请公布号
US2043412(A)
申请公布日期
1936.06.09
申请号
US19350023784
申请日期
1935.05.27
申请人
SAMUEL SILVER
发明人
KLEIN HENRY
分类号
E03C1/284
主分类号
E03C1/284
代理机构
代理人
主权项
地址
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