Improvements in valve seat grinding machines,申请号GB19430021661-传众专利搜索

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发明名称	Improvements in valve seat grinding machines
摘要
申请公布号	GB574042(A)	申请公布日期	1945.12.18
申请号	GB19430021661	申请日期	1943.12.24
申请人	THE HALL MFG. COMPANY	发明人
分类号	B24B15/00	主分类号	B24B15/00
代理机构		代理人
主权项
地址

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