ROCK BIT MOUNTING ASSEMBLY,申请号USD3572853-传众专利搜索

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发明名称	ROCK BIT MOUNTING ASSEMBLY
摘要
申请公布号	US3572853(A)	申请公布日期	1971.03.30
申请号	USD3572853	申请日期	1969.03.12
申请人	LAWRENCE MFG. CO.	发明人	WILLIAM D. COSKI
分类号	E21B10/22;(IPC1-7):F16C19/14	主分类号	E21B10/22
代理机构		代理人
主权项
地址

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