Ditch digging and cleaning machine,申请号US19270204623-传众专利搜索

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发明名称	Ditch digging and cleaning machine
摘要
申请公布号	US1765919(A)	申请公布日期	1930.06.24
申请号	US19270204623	申请日期	1927.07.09
申请人	EMIL HEUMANN	发明人	HEUMANN EMIL
分类号	E02F3/06;E02F5/02	主分类号	E02F3/06
代理机构		代理人
主权项
地址

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