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发明名称
Scraping means for sewage disposal plants
摘要
申请公布号
US1951462(A)
申请公布日期
1934.03.20
申请号
US19320616666
申请日期
1932.06.11
申请人
WING FREDERICK K
发明人
WING FREDERICK K.
分类号
B01D21/06
主分类号
B01D21/06
代理机构
代理人
主权项
地址
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