Inverse square law teaching apparatus,申请号US19590856178-传众专利搜索

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发明名称	Inverse square law teaching apparatus
摘要
申请公布号	US3056216(A)	申请公布日期	1962.10.02
申请号	US19590856178	申请日期	1959.11.30
申请人	JOSEPH SINGERMAN	发明人	SINGERMAN JOSEPH
分类号	G09B19/02	主分类号	G09B19/02
代理机构		代理人
主权项
地址

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