Drag line crane,申请号US19570696211-传众专利搜索

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发明名称	Drag line crane
摘要
申请公布号	US2978820(A)	申请公布日期	1961.04.11
申请号	US19570696211	申请日期	1957.11.13
申请人	AMERICAN HOIST & DERRICK COMPANY	发明人	JOHNSON ALGOT F.
分类号	E02F3/48	主分类号	E02F3/48
代理机构		代理人
主权项
地址

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