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经营范围
发明名称
Acoustic device supporter
摘要
申请公布号
US2156504(A)
申请公布日期
1939.05.02
申请号
US19380219985
申请日期
1938.07.19
申请人
LISS BESS S
发明人
LISS BESS S.
分类号
A41D13/12;H04R25/04
主分类号
A41D13/12
代理机构
代理人
主权项
地址
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