An envelope with concealed opening,申请号GB19590015659-传众专利搜索

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发明名称	An envelope with concealed opening
摘要
申请公布号	GB861086(A)	申请公布日期	1961.02.15
申请号	GB19590015659	申请日期	1959.05.07
申请人	MARCEL VAN DER DONCK	发明人
分类号	B65D27/32	主分类号	B65D27/32
代理机构		代理人
主权项
地址

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