DRAWING AND DRAUGHTMAN'S PIN,申请号CAD456993-传众专利搜索

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发明名称	DRAWING AND DRAUGHTMAN'S PIN
摘要
申请公布号	CA456993(A)	申请公布日期	1949.05.31
申请号	CAD456993	申请日期
申请人	HERMAN HAMILTON-GREY	发明人	HERMAN HAMILTON-GREY
分类号		主分类号
代理机构		代理人
主权项
地址

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