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发明名称
Masse zum Herstellen von Erstarrungskernen
摘要
申请公布号
DE705451(C)
申请公布日期
1941.04.29
申请号
DE1938M141363D
申请日期
1938.04.17
申请人
DR. OTTO MAUERMANN
发明人
MAUERMANN DR. OTTO
分类号
B22C1/22;B22C1/24
主分类号
B22C1/22
代理机构
代理人
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