Process of making zinc sulphide pigment,申请号US19310564695-传众专利搜索

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发明名称	Process of making zinc sulphide pigment
摘要
申请公布号	US1937639(A)	申请公布日期	1933.12.05
申请号	US19310564695	申请日期	1931.09.23
申请人	CHRISTENSEN NIELS C	发明人	CHRISTENSEN NIELS C.
分类号	C01G9/08	主分类号	C01G9/08
代理机构		代理人
主权项
地址

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