Attenuators,申请号US19510229172-传众专利搜索

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法人/股东/高管

发明名称	Attenuators
摘要
申请公布号	US2725535(A)	申请公布日期	1955.11.29
申请号	US19510229172	申请日期	1951.05.31
申请人	INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION	发明人	GRIEG DONALD D.;ENGELMANN HERBERT F.;KOSTRIZA JOHN A.
分类号	H01P1/22	主分类号	H01P1/22
代理机构		代理人
主权项
地址

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