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发明名称
Hammer mill screen construction
摘要
申请公布号
US2640650(A)
申请公布日期
1953.06.02
申请号
US19500149403
申请日期
1950.03.13
申请人
JACOBSON HOWARD C
发明人
JACOBSON HOWARD C.
分类号
B02C13/284
主分类号
B02C13/284
代理机构
代理人
主权项
地址
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