Drawing medium and method of making the same,申请号US19430509269-传众专利搜索

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发明名称	Drawing medium and method of making the same
摘要
申请公布号	US2425068(A)	申请公布日期	1947.08.05
申请号	US19430509269	申请日期	1943.11.06
申请人	LOUIS S. SANDERS	发明人	MCINTOSH MAURICE D.
分类号	G03F1/00	主分类号	G03F1/00
代理机构		代理人
主权项
地址

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