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申请公布号
CN3089686D
申请公布日期
1998.11.11
申请号
CN97306095.6
申请日期
1997.04.30
申请人
姚玉利
发明人
宋国强 ; 姚玉利
分类号
08-07-L0200
主分类号
08-07-L0200
代理机构
山东省专利事务所
代理人
宋永丽
主权项
地址
253600山东省济南市乐陵市西工业路北首
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