Variable pitch propeller,申请号GB19310020072-传众专利搜索

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发明名称	Variable pitch propeller
摘要
申请公布号	GB388396(A)	申请公布日期	1933.02.13
申请号	GB19310020072	申请日期	1931.07.13
申请人	RUDOLPH WILLIAM SCHROEDER	发明人
分类号	B64C11/34	主分类号	B64C11/34
代理机构		代理人
主权项
地址

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