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发明名称
Sound arrester in the ventilator of sound-arresting rooms
摘要
申请公布号
US2394342(A)
申请公布日期
1946.02.05
申请号
US19410402549
申请日期
1941.07.15
申请人
MASAICHI TOMINAGA
发明人
TOMINAGA MASAICHI
分类号
E04B1/82
主分类号
E04B1/82
代理机构
代理人
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