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发明名称
SEWAGE PURIFYING DEVICE
摘要
申请公布号
CA318188(A)
申请公布日期
1931.12.22
申请号
CAD318188
申请日期
申请人
HENRY E. ELROD
发明人
HENRY E. ELROD
分类号
主分类号
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代理人
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