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发明名称
Flotation machine
摘要
申请公布号
US1901123(A)
申请公布日期
1933.03.14
申请号
US19310562750
申请日期
1931.09.14
申请人
THE RUTH COMPANY
发明人
JR. JOSEPH P. RUTH,
分类号
B03D1/16
主分类号
B03D1/16
代理机构
代理人
主权项
地址
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