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发明名称
摘要
申请公布号	JPS5549205(B2)	申请公布日期	1980.12.10
申请号	JP19750082294	申请日期	1975.07.03
申请人		发明人
分类号	E01D21/00;E01D2/00;E01D19/04	主分类号	E01D21/00
代理机构		代理人
主权项
地址

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