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发明名称
Valve bag
摘要
申请公布号
US2177122(A)
申请公布日期
1939.10.24
申请号
US19380199074
申请日期
1938.03.31
申请人
ARKELL & SMITHS
发明人
TOOKER JOHN N.
分类号
B65D30/24
主分类号
B65D30/24
代理机构
代理人
主权项
地址
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