Automatic screw pitch change and locking device,申请号US19500197571-传众专利搜索

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发明名称	Automatic screw pitch change and locking device
摘要
申请公布号	US2669311(A)	申请公布日期	1954.02.16
申请号	US19500197571	申请日期	1950.11.25
申请人	DE LAGREVOL MAXIME;ROGER LABOUREIX	发明人	LAGREVOL MAXIME DE;LABOUREIX ROGER
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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