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发明名称
Sound absorbing system
摘要
申请公布号
US1947287(A)
申请公布日期
1934.02.13
申请号
US19330674660
申请日期
1933.06.07
申请人
GENERAL ELECTRIC COMPANY
发明人
CALDWELL PHILIP G.
分类号
G10K11/172
主分类号
G10K11/172
代理机构
代理人
主权项
地址
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