CN206743502U - 航天用头戴式降压降噪耳机 - Google Patents
航天用头戴式降压降噪耳机 Download PDFInfo
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108882097A (zh) * | 2018-09-26 | 2018-11-23 | 惠州市欧凡实业有限公司 | 一种可缓解耳朵不适的耳机 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108882097A (zh) * | 2018-09-26 | 2018-11-23 | 惠州市欧凡实业有限公司 | 一种可缓解耳朵不适的耳机 |
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CB03 | Change of inventor or designer information |
Inventor after: Tian Chengyuan Inventor after: Wang Zhixin Inventor after: Li Xiaodong Inventor after: Sun Hui Inventor after: Shan Feng Inventor after: Xue Dongdong Inventor before: Wang Zhixin Inventor before: Li Xiaodong Inventor before: Tian Chengyuan Inventor before: Sun Hui Inventor before: Shan Feng Inventor before: Xue Dongdong |
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CB03 | Change of inventor or designer information | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171212 Termination date: 20200619 |
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CF01 | Termination of patent right due to non-payment of annual fee |