Signal transmitting system,申请号US19310537441-传众专利搜索

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发明名称	Signal transmitting system
摘要
申请公布号	US1953152(A)	申请公布日期	1934.04.03
申请号	US19310537441	申请日期	1931.05.14
申请人	AMERICAN TELEPHONE AND TELEGRAPH COMPANY	发明人	CLARK ALVA B.
分类号	H04B3/11	主分类号	H04B3/11
代理机构		代理人
主权项
地址

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