Improvements in or relating to hand or foot operated screw propelled boats,申请号GB19300012746-传众专利搜索

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发明名称	Improvements in or relating to hand or foot operated screw propelled boats
摘要
申请公布号	GB350154(A)	申请公布日期	1931.06.11
申请号	GB19300012746	申请日期	1930.04.25
申请人	JOHN WILLIAMS DAVIES;GEORGE MACLAREN	发明人
分类号	B63H16/18	主分类号	B63H16/18
代理机构		代理人
主权项
地址

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