Feathering device for boat oars,申请号US19370176080-传众专利搜索

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发明名称	Feathering device for boat oars
摘要
申请公布号	US2154018(A)	申请公布日期	1939.04.11
申请号	US19370176080	申请日期	1937.11.23
申请人	FRED WAGELE	发明人	WAGELE FRED
分类号	B63H16/06;B63H16/073	主分类号	B63H16/06
代理机构		代理人
主权项
地址

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