TELEGRAPH ALARM SYSTEM,申请号CAD453336-传众专利搜索

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发明名称	TELEGRAPH ALARM SYSTEM
摘要
申请公布号	CA453336(A)	申请公布日期	1948.12.14
申请号	CAD453336	申请日期
申请人	BELL TELEPHONE LABORATORIES;WESTERN ELECTRIC COMPANY, INCORPORATED	发明人	WILMARTH YEATON LANG
分类号		主分类号
代理机构		代理人
主权项
地址

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