Improvements relating to lead pencil protectors,申请号GB19430021856-传众专利搜索

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发明名称	Improvements relating to lead pencil protectors
摘要
申请公布号	GB571173(A)	申请公布日期	1945.08.09
申请号	GB19430021856	申请日期	1944.12.19
申请人	JOHN PARSONS	发明人
分类号	B43K23/00	主分类号	B43K23/00
代理机构		代理人
主权项
地址

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