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经营范围
发明名称
Mill hammer
摘要
申请公布号
US2244577(A)
申请公布日期
1941.06.03
申请号
US19390300488
申请日期
1939.10.20
申请人
SCHREIBER ALLEN B
发明人
SCHREIBER ALLEN B.
分类号
B02C13/28
主分类号
B02C13/28
代理机构
代理人
主权项
地址
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