Gravity actuated writing instrument,申请号US19530373228-传众专利搜索

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发明名称	Gravity actuated writing instrument
摘要
申请公布号	US2793618(A)	申请公布日期	1957.05.28
申请号	US19530373228	申请日期	1953.08.10
申请人	STREAMER PEN COMPANY, INC.	发明人	BENSON IRVING N.;VOGEL JEROME P.
分类号	B43K24/03	主分类号	B43K24/03
代理机构		代理人
主权项
地址

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