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经营范围
发明名称
AIR DUCT
摘要
<p>PURPOSE:To provide a duct intended to insulate sound between rooms.</p>
申请公布号
JPS5222346(A)
申请公布日期
1977.02.19
申请号
JP19750097906
申请日期
1975.08.11
申请人
NORITSU KK
发明人
TAMURA KIYOSHI
分类号
F24F13/02
主分类号
F24F13/02
代理机构
代理人
主权项
地址
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