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摘要
左视图与右视图相对称,省略左视图。
申请公布号
CN3004107S
申请公布日期
1989.09.10
申请号
CN88301792.X
申请日期
1988.11.30
申请人
张一钢
发明人
张一钢
分类号
10-07
主分类号
10-07
代理机构
北京市专利事务所
代理人
王昕
主权项
地址
北京市西四小拐桥12号
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