Proportional control system,申请号US19400314891-传众专利搜索

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发明名称	Proportional control system
摘要
申请公布号	US2257203(A)	申请公布日期	1941.09.30
申请号	US19400314891	申请日期	1940.01.29
申请人	LEO M. HARVEY	发明人	THACKER RALPH S.
分类号	G05D1/02	主分类号	G05D1/02
代理机构		代理人
主权项
地址

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