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经营范围
发明名称
Foundry flasks and method of manufacturing the same
摘要
申请公布号
GB433998(A)
申请公布日期
1935.08.23
申请号
GB19340037015
申请日期
1934.12.24
申请人
IRVING RICHARD SMITH
发明人
分类号
B22C21/00
主分类号
B22C21/00
代理机构
代理人
主权项
地址
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