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发明名称
Duplex envelope
摘要
申请公布号
US2228889(A)
申请公布日期
1941.01.14
申请号
US19390287463
申请日期
1939.07.31
申请人
COLUMBIA ENVELOPE COMPANY
发明人
SEBASTIAN WENDELL A.
分类号
B65D27/04;B65D27/08
主分类号
B65D27/04
代理机构
代理人
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