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发明名称
Acoustical device
摘要
申请公布号
US2109012(A)
申请公布日期
1938.02.22
申请号
US19360066100
申请日期
1936.02.27
申请人
NEVILLE LAWRANCE ATHOL ERNEST
发明人
LAWRANCE ATHOL ERNEST NEVILLE
分类号
G10K11/02
主分类号
G10K11/02
代理机构
代理人
主权项
地址
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