Lead for pencils, color pencils, copying pencils, or the like and process for manufacturing the same,申请号US19370143848-传众专利搜索

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发明名称	Lead for pencils, color pencils, copying pencils, or the like and process for manufacturing the same
摘要
申请公布号	US2149905(A)	申请公布日期	1939.03.07
申请号	US19370143848	申请日期	1937.05.20
申请人	THE FIRM "KOH-I-NOOR" TUZKARNA L. & C. HARDTMUTH	发明人	ZUCKERT RICHARD
分类号	B21C37/15;B43K19/18	主分类号	B21C37/15
代理机构		代理人
主权项
地址

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