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发明名称
摘要
申请公布号
BE440285(A)
申请公布日期
1941.02.28
申请号
BED440285
申请日期
1941.01.11
申请人
发明人
分类号
B04B11/00;B04C5/103;B04C5/187;C10K1/02
主分类号
B04B11/00
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