Frequency modulation signaling system,申请号US19400360882-传众专利搜索

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发明名称	Frequency modulation signaling system
摘要
申请公布号	US2323698(A)	申请公布日期	1943.07.06
申请号	US19400360882	申请日期	1940.10.12
申请人	ARMSTRONG EDWIN H	发明人	ARMSTRONG EDWIN H.
分类号	H04B14/00	主分类号	H04B14/00
代理机构		代理人
主权项
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