Vibrator test circuit,申请号US19440564529-传众专利搜索

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发明名称	Vibrator test circuit
摘要
申请公布号	US2470049(A)	申请公布日期	1949.05.10
申请号	US19440564529	申请日期	1944.11.21
申请人	P. R. MALLORY & CO., INC.	发明人	NULSEN MARVIN E.
分类号	G01R31/327	主分类号	G01R31/327
代理机构		代理人
主权项
地址

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