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发明名称
摘要
申请公布号	JPS5527681(Y2)	申请公布日期	1980.07.02
申请号	JP19750062281U	申请日期	1975.05.13
申请人		发明人
分类号	E01B35/00;E01B31/00;E01B37/00;(IPC1-7):E01B31/00	主分类号	E01B35/00
代理机构		代理人
主权项
地址

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