Coal breaker for loading machines,申请号US19300435508-传众专利搜索

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发明名称	Coal breaker for loading machines
摘要
申请公布号	US1772987(A)	申请公布日期	1930.08.12
申请号	US19300435508	申请日期	1930.03.13
申请人	ALONZO DUVALL JACOB	发明人	DUVALL JACOB ALONZO
分类号	E21F13/00	主分类号	E21F13/00
代理机构		代理人
主权项
地址

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