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发明名称
Screen plate
摘要
申请公布号
US2391501(A)
申请公布日期
1945.12.25
申请号
US19440541556
申请日期
1944.06.22
申请人
O'BRIEN FRED J
发明人
O'BRIEN FRED J.
分类号
B07B1/46
主分类号
B07B1/46
代理机构
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