System for guarding the transmission of messages,申请号US19550530925-传众专利搜索

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发明名称	System for guarding the transmission of messages
摘要
申请公布号	US2912484(A)	申请公布日期	1959.11.10
申请号	US19550530925	申请日期	1955.08.29
申请人	NORTH AMERICAN PHILIPS COMPANY, INC.	发明人	GROSSER HERMANN KARL MARIA;HARKEMA PIETER
分类号	H04L1/00;H04L12/02	主分类号	H04L1/00
代理机构		代理人
主权项
地址

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