Machine for forming pipes in the ground,申请号US19570699212-传众专利搜索

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发明名称	Machine for forming pipes in the ground
摘要
申请公布号	US2989012(A)	申请公布日期	1961.06.20
申请号	US19570699212	申请日期	1957.11.27
申请人	HALLEY CHENEY ALWYN	发明人	CHENEY ALWYN HALLEY
分类号	E02B11/02;E02F5/10;F16L1/038	主分类号	E02B11/02
代理机构		代理人
主权项
地址

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