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经营范围
发明名称
Portable electric rotary drain cleaner
摘要
申请公布号
US2467849(A)
申请公布日期
1949.04.19
申请号
US19440540178
申请日期
1944.06.14
申请人
O'BRIEN
发明人
O'BRIEN JOHN V.;HARZ JAMES L. VON
分类号
E03C1/302
主分类号
E03C1/302
代理机构
代理人
主权项
地址
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Quick-acting coupling with ball lock
