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经营范围
发明名称
Grinding device
摘要
申请公布号
US1873612(A)
申请公布日期
1932.08.23
申请号
US19310584154
申请日期
1931.12.31
申请人
MARTELL MANUFACTURING COMPANY
发明人
MARTELL ALBERT A.
分类号
B24B3/33
主分类号
B24B3/33
代理机构
代理人
主权项
地址
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