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发明名称
Sewage treatment
摘要
申请公布号
US1967197(A)
申请公布日期
1934.07.17
申请号
US19310556041
申请日期
1931.08.10
申请人
THE DORR COMPANY, INC.
发明人
BESSELIEVRE EDMUND B.
分类号
C02F11/12
主分类号
C02F11/12
代理机构
代理人
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地址
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