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经营范围
发明名称
Diaphragm type acoustic screen
摘要
申请公布号
US2508265(A)
申请公布日期
1950.05.16
申请号
US19470790766
申请日期
1947.12.10
申请人
CHARLES JOLFRE RENE
发明人
JOLFRE RENE CHARLES
分类号
E06B7/30
主分类号
E06B7/30
代理机构
代理人
主权项
地址
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