Telegraphic transmitter system,申请号US19400313807-传众专利搜索

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发明名称	Telegraphic transmitter system
摘要
申请公布号	US2273378(A)	申请公布日期	1942.02.17
申请号	US19400313807	申请日期	1940.01.15
申请人	RICE WALDO G	发明人	RICE WALDO G.
分类号	H04L17/12	主分类号	H04L17/12
代理机构		代理人
主权项
地址

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