METHOD AND DEVICE FOR RESTRICTED SAND DRAIN,申请号JP19770020006-传众专利搜索

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发明名称	METHOD AND DEVICE FOR RESTRICTED SAND DRAIN
摘要
申请公布号	JPS53105018(A)	申请公布日期	1978.09.12
申请号	JP19770020006	申请日期	1977.02.24
申请人	KATSUMA KAZUNARI	发明人	KATSUMA KAZUNARI
分类号	E02D3/10	主分类号	E02D3/10
代理机构		代理人
主权项
地址

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