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发明名称
Rock crusher
摘要
申请公布号
US1874329(A)
申请公布日期
1932.08.30
申请号
US19300446942
申请日期
1930.04.24
申请人
HOWARD C. MCELVAIN
发明人
MCELVAIN HOWARD JEROME
分类号
B02C2/00
主分类号
B02C2/00
代理机构
代理人
主权项
地址
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