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发明名称
Sewage scum removal
摘要
申请公布号
US2897149(A)
申请公布日期
1959.07.28
申请号
US19540459185
申请日期
1954.09.29
申请人
GRIFFITH LLEWELLYN B
发明人
GRIFFITH LLEWELLYN B.
分类号
B01D21/00
主分类号
B01D21/00
代理机构
代理人
主权项
地址
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