Floor clean-up mechanism for continuous mining apparatus,申请号US19490095468-传众专利搜索

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发明名称	Floor clean-up mechanism for continuous mining apparatus
摘要
申请公布号	US2737284(A)	申请公布日期	1956.03.06
申请号	US19490095468	申请日期	1949.05.26
申请人	JOY MANUFACTURING COMPANY	发明人	BALL CHARLES F.
分类号	E21C35/20	主分类号	E21C35/20
代理机构		代理人
主权项
地址

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