EGG-SHAPED PIPE BURYING DEVICE,申请号JP19910060883-传众专利搜索

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发明名称	EGG-SHAPED PIPE BURYING DEVICE
摘要
申请公布号	JPH05311988(A)	申请公布日期	1993.11.22
申请号	JP19910060883	申请日期	1991.02.07
申请人	SANWA KIZAI CO LTD	发明人	AKIBA TOSHIYASU;YAMANOI ISAMU
分类号	E21D9/06;E21D9/08;(IPC1-7):E21D9/06	主分类号	E21D9/06
代理机构		代理人
主权项
地址

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