An improved adjustable drawing board,申请号PHUM7499U-传众专利搜索

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发明名称	An improved adjustable drawing board
摘要
申请公布号	PHUM5186(Z)	申请公布日期	1983.03.14
申请号	PHUM7499U	申请日期	1981.10.21
申请人		发明人
分类号	B43L5/00;(IPC1-7):B43L5/00	主分类号	B43L5/00
代理机构		代理人
主权项
地址

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