Improvements in propelling pencils,申请号GB19340035137-传众专利搜索

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发明名称	Improvements in propelling pencils
摘要
申请公布号	GB447292(A)	申请公布日期	1936.05.15
申请号	GB19340035137	申请日期	1934.12.07
申请人	WILLIAM HENRY TANT	发明人
分类号	B43K21/12	主分类号	B43K21/12
代理机构		代理人
主权项
地址

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