Variable-circuit element for radio receiving sets,申请号US19260102142-传众专利搜索

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发明名称	Variable-circuit element for radio receiving sets
摘要
申请公布号	US1749930(A)	申请公布日期	1930.03.11
申请号	US19260102142	申请日期	1926.04.15
申请人	VREELAND FREDERICK K	发明人	VREELAND FREDERICK K.
分类号	H03J1/08	主分类号	H03J1/08
代理机构		代理人
主权项
地址

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