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发明名称
Mechanism and method for forming sleeved valve bags
摘要
申请公布号
US2643588(A)
申请公布日期
1953.06.30
申请号
US19490118545
申请日期
1949.09.29
申请人
ST. REGIS PAPER COMPANY
发明人
BURROUGHS EDWIN E.
分类号
B31B19/84
主分类号
B31B19/84
代理机构
代理人
主权项
地址
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