Leads or crayons and method of making the same,申请号US19510248645-传众专利搜索

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发明名称	Leads or crayons and method of making the same
摘要
申请公布号	US2784164(A)	申请公布日期	1957.03.05
申请号	US19510248645	申请日期	1951.09.27
申请人	JOSEPH DIXON CRUCIBLE COMPANY	发明人	AHLMAN GORDON V.;WYCKOFF WILBUR R.
分类号	C09D13/00	主分类号	C09D13/00
代理机构		代理人
主权项
地址

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