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经营范围
发明名称
SEWAGE TREATMENT SYSTEM
摘要
申请公布号
US3579440(A)
申请公布日期
1971.05.18
申请号
USD3579440
申请日期
1969.12.04
申请人
TESCO CHEMICALS INC.
发明人
WILLIAM E. BRADLEY JR.
分类号
A47L15/44;C02F3/00;C02F3/12;C02F9/00;(IPC1-7):C02B3/06
主分类号
A47L15/44
代理机构
代理人
主权项
地址
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