Rotary wing blade,申请号US19470752649-传众专利搜索

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发明名称	Rotary wing blade
摘要
申请公布号	US2574980(A)	申请公布日期	1951.11.13
申请号	US19470752649	申请日期	1947.06.05
申请人	PIASECKI HELICOPTER CORPORATION	发明人	MEYERS DONALD N.
分类号	B64C27/473	主分类号	B64C27/473
代理机构		代理人
主权项
地址

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