Shielded grid tube,申请号US19270230449-传众专利搜索

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发明名称	Shielded grid tube
摘要
申请公布号	US1840365(A)	申请公布日期	1932.01.12
申请号	US19270230449	申请日期	1927.11.02
申请人	ARCTURUS RADIO TUBE COMPANY	发明人	KRAHL WALTER LOUIS
分类号	H01J19/42	主分类号	H01J19/42
代理机构		代理人
主权项
地址

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