Means and method of shoring bell bottom pile holes,申请号US19380235292-传众专利搜索

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发明名称	Means and method of shoring bell bottom pile holes
摘要
申请公布号	US2203978(A)	申请公布日期	1940.06.11
申请号	US19380235292	申请日期	1938.10.15
申请人	JOSIE A. BERTRAN	发明人	BERTRAN BENJAMIN E.
分类号	E02D5/44	主分类号	E02D5/44
代理机构		代理人
主权项
地址

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