Constant speed motor drive system,申请号US19500198162-传众专利搜索

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发明名称	Constant speed motor drive system
摘要
申请公布号	US2659852(A)	申请公布日期	1953.11.17
申请号	US19500198162	申请日期	1950.11.29
申请人	DICTAPHONE CORPORATION	发明人	TREVITT JOHN H.
分类号	H02P4/00	主分类号	H02P4/00
代理机构		代理人
主权项
地址

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