Abrasive products and methods of manufacture,申请号US19400330155-传众专利搜索

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发明名称	Abrasive products and methods of manufacture
摘要
申请公布号	US2389462(A)	申请公布日期	1945.11.20
申请号	US19400330155	申请日期	1940.04.17
申请人	THE CARBORUNDUM COMPANY	发明人	SMITH ROBERT L.
分类号	B24D3/28	主分类号	B24D3/28
代理机构		代理人
主权项
地址

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