Lubrication for mining machine chains,申请号US19430489604-传众专利搜索

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发明名称	Lubrication for mining machine chains
摘要
申请公布号	US2400230(A)	申请公布日期	1946.05.14
申请号	US19430489604	申请日期	1943.06.04
申请人	FRANK PROX COMPANY, INC.	发明人	FULKE FRANK L.
分类号	E21C25/28	主分类号	E21C25/28
代理机构		代理人
主权项
地址

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