System for transmitting telegraph signals,申请号US19380237706-传众专利搜索

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发明名称	System for transmitting telegraph signals
摘要
申请公布号	US2292944(A)	申请公布日期	1942.08.11
申请号	US19380237706	申请日期	1938.10.29
申请人	ERICH HUDEC	发明人	HUDEC ERICH
分类号	H04L7/033	主分类号	H04L7/033
代理机构		代理人
主权项
地址

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