Geometric design instrument,申请号US19650503458-传众专利搜索

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发明名称	Geometric design instrument
摘要
申请公布号	US3298104(A)	申请公布日期	1967.01.17
申请号	US19650503458	申请日期	1965.10.23
申请人	VERNON SMITH DAN	发明人	SMITH DAN VERNON
分类号	B43L11/08	主分类号	B43L11/08
代理机构		代理人
主权项
地址

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