Ruler,申请号US19480041089-传众专利搜索

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发明名称	Ruler
摘要
申请公布号	US2562348(A)	申请公布日期	1951.07.31
申请号	US19480041089	申请日期	1948.07.28
申请人	UNIVERSAL DRAFTING MACHINE CORPORATION	发明人	JR. WENARD BOWSER,
分类号	B43L7/00	主分类号	B43L7/00
代理机构		代理人
主权项
地址

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