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发明名称
Screen
摘要
申请公布号
US2194222(A)
申请公布日期
1940.03.19
申请号
US19380239228
申请日期
1938.11.07
申请人
EWING DEVELOPMENT COMPANY
发明人
EWING WALKLEY B.
分类号
E06B9/24;E06B9/52
主分类号
E06B9/24
代理机构
代理人
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