Verfahren zur Geheimuebertragung von Signalen,申请号DE1928I034457D-传众专利搜索

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发明名称	Verfahren zur Geheimuebertragung von Signalen
摘要
申请公布号	DE540782(C)	申请公布日期	1932.01.07
申请号	DE1928I034457D	申请日期	1928.05.22
申请人	INTERNATIONAL STANDARD ELECTRIC CORPORATION	发明人
分类号	H04K1/04	主分类号	H04K1/04
代理机构		代理人
主权项
地址

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