Variable thrust and reversing propeller,申请号US19460676727-传众专利搜索

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发明名称	Variable thrust and reversing propeller
摘要
申请公布号	US2481751(A)	申请公布日期	1949.09.13
申请号	US19460676727	申请日期	1946.06.14
申请人	JAMES JEROME B	发明人	JAMES JEROME B.
分类号	B63H1/22;B63H3/04	主分类号	B63H1/22
代理机构		代理人
主权项
地址

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