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经营范围
发明名称
摘要
申请公布号
DD95064(A1)
申请公布日期
1973.01.12
申请号
DD19720161675
申请日期
1972.03.21
申请人
发明人
分类号
G21K1/00;(IPC1-7):G21K1/00
主分类号
G21K1/00
代理机构
代理人
主权项
地址
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