Variable propeller system incorporating a forward transfer bearing,申请号US19890320690-传众专利搜索

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发明名称	Variable propeller system incorporating a forward transfer bearing
摘要
申请公布号	US4893989(A)	申请公布日期	1990.01.16
申请号	US19890320690	申请日期	1989.03.07
申请人	UNITED TECHNOLOGIES CORPORATION	发明人	CARVALHO, PAUL A.
分类号	B63H3/08;B64C11/38	主分类号	B63H3/08
代理机构		代理人
主权项
地址

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