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发明名称
Crushing roll
摘要
申请公布号
US1795663(A)
申请公布日期
1931.03.10
申请号
US19280266716
申请日期
1928.04.02
申请人
GRANT MCGREGOR ALEXANDER
发明人
MCGREGOR ALEXANDER GRANT
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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