Improvements in helicopters,申请号GB19420011493-传众专利搜索

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发明名称	Improvements in helicopters
摘要
申请公布号	GB563427(A)	申请公布日期	1944.08.15
申请号	GB19420011493	申请日期	1942.08.17
申请人	G. & J. WEIR LIMITED;CYRIL GEORGE PULLIN	发明人
分类号	B64C27/82	主分类号	B64C27/82
代理机构		代理人
主权项
地址

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