Safety device for airplanes,申请号US19300429414-传众专利搜索

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发明名称	Safety device for airplanes
摘要
申请公布号	US1775415(A)	申请公布日期	1930.09.09
申请号	US19300429414	申请日期	1930.02.18
申请人	WATTLES JR GEORGE WARREN	发明人	JR. GEORGE WARREN WATTLES,
分类号	B64C1/00	主分类号	B64C1/00
代理机构		代理人
主权项
地址

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