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经营范围
发明名称
Grinding mill
摘要
申请公布号
US1933764(A)
申请公布日期
1933.11.07
申请号
US19310571486
申请日期
1931.10.28
申请人
THE RUTH COMPANY
发明人
JR. JOSEPH P. RUTH,
分类号
B02C17/04
主分类号
B02C17/04
代理机构
代理人
主权项
地址
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