Holder for thermionic tubes,申请号US19270204704-传众专利搜索

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发明名称	Holder for thermionic tubes
摘要
申请公布号	US1750053(A)	申请公布日期	1930.03.11
申请号	US19270204704	申请日期	1927.07.11
申请人	ROBINSON WALTER W	发明人	ROBINSON WALTER W.
分类号	H01R33/76	主分类号	H01R33/76
代理机构		代理人
主权项
地址

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