Mining chain cutting bit,申请号US19300454561-传众专利搜索

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发明名称	Mining chain cutting bit
摘要
申请公布号	US2036327(A)	申请公布日期	1936.04.07
申请号	US19300454561	申请日期	1930.05.22
申请人	THE JEFFREY MANUFACTURING COMPANY	发明人	FULKE FRANK L.
分类号	E21C35/19;E21C35/193	主分类号	E21C35/19
代理机构		代理人
主权项
地址

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