Process of manufacturing portland cement,申请号US19390279946-传众专利搜索

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发明名称	Process of manufacturing portland cement
摘要
申请公布号	US2286420(A)	申请公布日期	1942.06.16
申请号	US19390279946	申请日期	1939.06.19
申请人	OLIVER UNITED FILTERS INCORPORATED	发明人	JACKSON CHARLES R.
分类号	C04B7/42	主分类号	C04B7/42
代理机构		代理人
主权项
地址

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