MOVING COIL-TYPE ELECTRICAL MEASURING INSTRUMENT HAVING MULTIPLE FIELD POLES EACH PROVIDED WITH AN ADJUSTABLE ROTARY MAGNET AND A VERNIER SLUG FOR CALIBRATION OF THE INSTRUMENT AT MULTIPLE POINTS ON THE SCALE,申请号USD3500203-传众专利搜索

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发明名称	MOVING COIL-TYPE ELECTRICAL MEASURING INSTRUMENT HAVING MULTIPLE FIELD POLES EACH PROVIDED WITH AN ADJUSTABLE ROTARY MAGNET AND A VERNIER SLUG FOR CALIBRATION OF THE INSTRUMENT AT MULTIPLE POINTS ON THE SCALE
摘要
申请公布号	US3500203(A)	申请公布日期	1970.03.10
申请号	USD3500203	申请日期	1967.12.04
申请人	JOHN W. WATERLOO SR.	发明人	JOHN W. WATERLOO SR.
分类号	G01R1/16;G01R5/04;(IPC1-7):G01R1/08	主分类号	G01R1/16
代理机构		代理人
主权项
地址

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