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经营范围
发明名称
Sealed package evacuating means
摘要
申请公布号
US2708541(A)
申请公布日期
1955.05.17
申请号
US19520314043
申请日期
1952.10.10
申请人
THE DOW CHEMICAL COMPANY
发明人
JONES WILLIAM C.
分类号
B65B31/08
主分类号
B65B31/08
代理机构
代理人
主权项
地址
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