Protract-retract mechanism and writing instrument including same,申请号US19550531460-传众专利搜索

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发明名称	Protract-retract mechanism and writing instrument including same
摘要
申请公布号	US3137276(A)	申请公布日期	1964.06.16
申请号	US19550531460	申请日期	1955.08.30
申请人	DAVID KAHN, INC.	发明人	WEISSER KARL
分类号	B43K24/08;G09F23/00	主分类号	B43K24/08
代理机构		代理人
主权项
地址

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