Improvements relating to radio receiving apparatus,申请号GB19310019647-传众专利搜索

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发明名称	Improvements relating to radio receiving apparatus
摘要
申请公布号	GB385997(A)	申请公布日期	1933.01.09
申请号	GB19310019647	申请日期	1931.07.08
申请人	THE UNION SWITCH & SIGNAL COMPANY	发明人
分类号	H03G3/22	主分类号	H03G3/22
代理机构		代理人
主权项
地址

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