Combination dredging, drilling, and pile-driving equipment,申请号US19370156394-传众专利搜索

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发明名称	Combination dredging, drilling, and pile-driving equipment
摘要
申请公布号	US2153557(A)	申请公布日期	1939.04.11
申请号	US19370156394	申请日期	1937.07.29
申请人	GRENIER JOSEPH O	发明人	GRENIER JOSEPH O.
分类号	E02D29/09;E02F5/00;E02F9/06;E21B7/12	主分类号	E02D29/09
代理机构		代理人
主权项
地址

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