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发明名称
Grinder speed control
摘要
申请公布号
US1911857(A)
申请公布日期
1933.05.30
申请号
US19290361422
申请日期
1929.05.08
申请人
MARSCHKE MANUFACTURING COMPANY
发明人
STUMPF ALVINA
分类号
B24B47/18
主分类号
B24B47/18
代理机构
代理人
主权项
地址
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