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发明名称
Improved method and apparatus for the production of hollow metal castings
摘要
申请公布号
GB389021(A)
申请公布日期
1933.03.09
申请号
GB19320025807
申请日期
1932.09.16
申请人
EMIL KISTINGER
发明人
分类号
B22D21/04
主分类号
B22D21/04
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代理人
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