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发明名称
Screen
摘要
申请公布号
US1765388(A)
申请公布日期
1930.06.24
申请号
US19250034646
申请日期
1925.06.03
申请人
WATSON WILLIAM W
发明人
WATSON WILLIAM W.
分类号
E06B9/52
主分类号
E06B9/52
代理机构
代理人
主权项
地址
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