Adjustable drafting board,申请号US19490114317-传众专利搜索

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发明名称	Adjustable drafting board
摘要
申请公布号	US2622364(A)	申请公布日期	1952.12.23
申请号	US19490114317	申请日期	1949.09.07
申请人	HINE ROBERT T	发明人	HINE ROBERT T.
分类号	B43L13/04	主分类号	B43L13/04
代理机构		代理人
主权项
地址

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