发明名称 |
Headset amplifier |
摘要 |
|
申请公布号 |
USD327068(S1) |
申请公布日期 |
1992.06.16 |
申请号 |
US07/445323 |
申请日期 |
1989.12.01 |
申请人 |
|
发明人 |
|
分类号 |
|
主分类号 |
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代理机构 |
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代理人 |
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主权项 |
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地址 |
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