ROCK DRILL VALVE,申请号CAD334718-传众专利搜索

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发明名称	ROCK DRILL VALVE
摘要
申请公布号	CA334718(A)	申请公布日期	1933.08.08
申请号	CAD334718	申请日期
申请人	THE INGERSOLL-RAND COMPANY	发明人	WILLIAM AUGUSTUS SMITH, SR.
分类号		主分类号
代理机构		代理人
主权项
地址

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