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经营范围
发明名称
Combined shutter and ventilator
摘要
申请公布号
US1883753(A)
申请公布日期
1932.10.18
申请号
US19300463467
申请日期
1930.06.24
申请人
BASSON JOSEPH D
发明人
BASSON JOSEPH D.
分类号
G03B9/10
主分类号
G03B9/10
代理机构
代理人
主权项
地址
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