DRAFTING PEN WITH VENT VALVE,申请号USD3463598-传众专利搜索

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发明名称	DRAFTING PEN WITH VENT VALVE
摘要
申请公布号	US3463598(A)	申请公布日期	1969.08.26
申请号	USD3463598	申请日期	1968.09.11
申请人	DIKE INC.	发明人	EDWARD BOK
分类号	B43K8/16;(IPC1-7):B43K5/18	主分类号	B43K8/16
代理机构		代理人
主权项
地址

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