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发明名称
Screening machine
摘要
申请公布号
US2142794(A)
申请公布日期
1939.01.03
申请号
US19380206185
申请日期
1938.05.05
申请人
JESSE MATTHEWS
发明人
MATTHEWS JESSE
分类号
B07B1/46;E02F3/413;E02F7/06
主分类号
B07B1/46
代理机构
代理人
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地址
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