Precipitation of tungstic oxide,申请号US19330663182-传众专利搜索

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发明名称	Precipitation of tungstic oxide
摘要
申请公布号	US1972136(A)	申请公布日期	1934.09.04
申请号	US19330663182	申请日期	1933.03.28
申请人	WESTINGHOUSE LAMP COMPANY	发明人	DRIGGS FRANK H.
分类号	C22B34/36	主分类号	C22B34/36
代理机构		代理人
主权项
地址

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