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经营范围
发明名称
摘要
申请公布号
JPS558710(U)
申请公布日期
1980.01.21
申请号
JP19780088180U
申请日期
1978.06.27
申请人
发明人
分类号
E01F9/669
主分类号
E01F9/669
代理机构
代理人
主权项
地址
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