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发明名称
Drain cleaner
摘要
申请公布号
US2188960(A)
申请公布日期
1940.02.06
申请号
US19380211331
申请日期
1938.06.02
申请人
SCHUBRING ALBERT A
发明人
SCHUBRING ALBERT A.
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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