Radio transmission system,申请号US19270206331-传众专利搜索

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发明名称	Radio transmission system
摘要
申请公布号	US1895459(A)	申请公布日期	1933.01.31
申请号	US19270206331	申请日期	1927.07.16
申请人	HAMMOND JR JOHN HAYS	发明人	JR. JOHN HAYS HAMMOND,
分类号	H04K1/00	主分类号	H04K1/00
代理机构		代理人
主权项
地址

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