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发明名称
Trap cleaner and force pump
摘要
申请公布号
US2187043(A)
申请公布日期
1940.01.16
申请号
US19380220279
申请日期
1938.07.20
申请人
MACMILLAN JOHN L
发明人
MACMILLAN JOHN L.
分类号
E03C1/306
主分类号
E03C1/306
代理机构
代理人
主权项
地址
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