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经营范围
发明名称
Sand classifier
摘要
申请公布号
US2203405(A)
申请公布日期
1940.06.04
申请号
US19380213382
申请日期
1938.06.13
申请人
WALTER E. LIPPMANN
发明人
CLICQUENNOI IRVING M.;WEIMER HUGO W.
分类号
B22C5/06
主分类号
B22C5/06
代理机构
代理人
主权项
地址
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