Self-expanding mandrel for pile casings,申请号US19560620224-传众专利搜索

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发明名称	Self-expanding mandrel for pile casings
摘要
申请公布号	US2928252(A)	申请公布日期	1960.03.15
申请号	US19560620224	申请日期	1956.11.05
申请人	MCKEE JOHN S	发明人	MCKEE JOHN S.
分类号	E02D7/30	主分类号	E02D7/30
代理机构		代理人
主权项
地址

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