CN206629274U - 一种多媒体教学音响测试装置 - Google Patents
一种多媒体教学音响测试装置 Download PDFInfo
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CN114339575A (zh) * | 2021-12-29 | 2022-04-12 | 深圳德威音响有限公司 | 一种基于dsp技术的音频测试仪 |
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CN114339575A (zh) * | 2021-12-29 | 2022-04-12 | 深圳德威音响有限公司 | 一种基于dsp技术的音频测试仪 |
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Denomination of utility model: Multimedia teaching stereo set testing arrangement Effective date of registration: 20200317 Granted publication date: 20171110 Pledgee: Guangzhou Bank Co.,Ltd. Guangzhou Fangcun Branch Pledgor: GUANGZHOU JUSBE ELECTRONIC TECHNOLOGY Co.,Ltd. Registration number: Y2020440000036 |
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Date of cancellation: 20210401 Granted publication date: 20171110 Pledgee: Guangzhou Bank Co.,Ltd. Guangzhou Fangcun Branch Pledgor: GUANGZHOU JUSBE ELECTRONIC TECHNOLOGY Co.,Ltd. Registration number: Y2020440000036 |
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Denomination of utility model: A multimedia teaching sound testing device Effective date of registration: 20220513 Granted publication date: 20171110 Pledgee: Guangzhou Bank Co.,Ltd. Guangzhou Fangcun Branch Pledgor: GUANGZHOU JUSBE ELECTRONIC TECHNOLOGY CO.,LTD. Registration number: Y2022440000089 |
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Date of cancellation: 20230614 Granted publication date: 20171110 Pledgee: Guangzhou Bank Co.,Ltd. Guangzhou Fangcun Branch Pledgor: GUANGZHOU JUSBE ELECTRONIC TECHNOLOGY CO.,LTD. Registration number: Y2022440000089 |