Retractable water propeller for airships,申请号US19380200255-传众专利搜索

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发明名称	Retractable water propeller for airships
摘要
申请公布号	US2151004(A)	申请公布日期	1939.03.21
申请号	US19380200255	申请日期	1938.04.05
申请人	BARCLAY WILLIAM L	发明人	BARCLAY WILLIAM L.
分类号	B64C35/00	主分类号	B64C35/00
代理机构		代理人
主权项
地址

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