Navigational training or instruction apparatus,申请号US19540453507-传众专利搜索

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发明名称	Navigational training or instruction apparatus
摘要
申请公布号	US2853800(A)	申请公布日期	1958.09.30
申请号	US19540453507	申请日期	1954.09.01
申请人	COMMUNICATIONS PATENTS LIMITED	发明人	CUTLER ALBERT ERNEST
分类号	G01S1/02;G01S19/19;G09B9/24	主分类号	G01S1/02
代理机构		代理人
主权项
地址

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