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经营范围
发明名称
Chamber closure
摘要
申请公布号
US2636637(A)
申请公布日期
1953.04.28
申请号
US19490075270
申请日期
1949.02.08
申请人
NATIONAL LEAD COMPANY
发明人
POWERS DIXON D.
分类号
F16J13/10
主分类号
F16J13/10
代理机构
代理人
主权项
地址
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