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经营范围
发明名称
伞骨架
摘要
后视图与主视图对称,省略后视图。
申请公布号
CN3005169S
申请公布日期
1990.03.21
申请号
CN89301037.5
申请日期
1989.06.28
申请人
杨其国
发明人
杨其国
分类号
03-03
主分类号
03-03
代理机构
代理人
主权项
地址
北京市东城区后拐棒胡同6号100010
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