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经营范围
发明名称
Grinding apparatus
摘要
申请公布号
US1904058(A)
申请公布日期
1933.04.18
申请号
US19300494937
申请日期
1930.11.11
申请人
JOHN KOTOUC
发明人
KOTOUC JOHN
分类号
B02C4/28
主分类号
B02C4/28
代理机构
代理人
主权项
地址
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