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发明名称
GRINDING MILL
摘要
申请公布号
CA347876(A)
申请公布日期
1935.01.29
申请号
CAD347876
申请日期
申请人
THE HYDRO ELECTRIC POWER COMMISSION OF ONTARIO
发明人
JOHN W. PURCELL;HUGH D. ROTHWELL
分类号
主分类号
代理机构
代理人
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