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经营范围
发明名称
Drain cleaner
摘要
申请公布号
US2059532(A)
申请公布日期
1936.11.03
申请号
US19360067714
申请日期
1936.03.07
申请人
NAGEL ERNEST A
发明人
NAGEL ERNEST 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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