SIGHT RULER FOR PERSPECTIVE DRAFTING,申请号USD3503129-传众专利搜索

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发明名称	SIGHT RULER FOR PERSPECTIVE DRAFTING
摘要
申请公布号	US3503129(A)	申请公布日期	1970.03.31
申请号	USD3503129	申请日期	1968.05.20
申请人	CLARENCE E. SAXTON	发明人	CLARENCE E. SAXTON
分类号	B43L13/16;(IPC1-7):B43L7/00	主分类号	B43L13/16
代理机构		代理人
主权项
地址

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