Air-pilot-training device and the like,申请号US19290411794-传众专利搜索

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发明名称	Air-pilot-training device and the like
摘要
申请公布号	US1791655(A)	申请公布日期	1931.02.10
申请号	US19290411794	申请日期	1929.12.05
申请人	ALVIN BISCH	发明人	BISCH ALVIN
分类号	G09B9/12	主分类号	G09B9/12
代理机构		代理人
主权项
地址

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