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发明名称
Package opener
摘要
申请公布号
US2140021(A)
申请公布日期
1938.12.13
申请号
US19370139139
申请日期
1937.04.27
申请人
MALLEN EDWARD J
发明人
MALLEN EDWARD J.
分类号
B65D75/70
主分类号
B65D75/70
代理机构
代理人
主权项
地址
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