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经营范围
发明名称
Cooler top
摘要
申请公布号
US2148276(A)
申请公布日期
1939.02.21
申请号
US19370160387
申请日期
1937.08.23
申请人
POWERS FRANK T
发明人
POWERS FRANK T.
分类号
G03F7/40
主分类号
G03F7/40
代理机构
代理人
主权项
地址
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