Trigonometric slide rule,申请号US19890411019-传众专利搜索

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发明名称	Trigonometric slide rule
摘要	The invention relates to an improved slide rule type of apparatus that provides visual solutions to trigonometric problems. The invention provides a cheaper to make and easier to read trigonometric slide rule.
申请公布号	US5084609(A)	申请公布日期	1992.01.28
申请号	US19890411019	申请日期	1989.09.22
申请人	SABER, GILBERT F.	发明人	SABER, GILBERT F.
分类号	G06G1/14	主分类号	G06G1/14
代理机构		代理人
主权项
地址

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