Draftsman's triangle,申请号US19520266035-传众专利搜索

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发明名称	Draftsman's triangle
摘要
申请公布号	US2690619(A)	申请公布日期	1954.10.05
申请号	US19520266035	申请日期	1952.01.11
申请人	FRED TISCH	发明人	TISCH FRED
分类号	B43L7/027	主分类号	B43L7/027
代理机构		代理人
主权项
地址

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