System and method of hydraulic mining,申请号US19240737721-传众专利搜索

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发明名称	System and method of hydraulic mining
摘要
申请公布号	US1810571(A)	申请公布日期	1931.06.16
申请号	US19240737721	申请日期	1924.09.15
申请人	AMERICAN CYANAMID COMPANY	发明人	MEAD HARRY L.
分类号	E21C25/60	主分类号	E21C25/60
代理机构		代理人
主权项
地址

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