CN207250135U - 一种带金属骨架的空腔吸声尖劈复合体 - Google Patents
一种带金属骨架的空腔吸声尖劈复合体 Download PDFInfo
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CN107578767A (zh) * | 2017-09-29 | 2018-01-12 | 哈尔滨工程大学船舶装备科技有限公司 | 一种带金属骨架的空腔吸声尖劈复合体 |
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CN107578767A (zh) * | 2017-09-29 | 2018-01-12 | 哈尔滨工程大学船舶装备科技有限公司 | 一种带金属骨架的空腔吸声尖劈复合体 |
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Date of cancellation: 20211011 Granted publication date: 20180417 Pledgee: Harbin Kechuang Financing Guarantee Co.,Ltd. Pledgor: HARBIN ENGINEERING UNIVERSITY SHIP EQUIPMENT & TECHNOLOGY Co.,Ltd. Registration number: Y2020230000009 |
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Denomination of utility model: Cavity sound absorbing wedge complex with metal skeleton Effective date of registration: 20220104 Granted publication date: 20180417 Pledgee: Harbin Kechuang Financing Guarantee Co.,Ltd. Pledgor: HARBIN ENGINEERING UNIVERSITY SHIP EQUIPMENT & TECHNOLOGY CO.,LTD. Registration number: Y2022230000005 |
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Date of cancellation: 20230215 Granted publication date: 20180417 Pledgee: Harbin Kechuang Financing Guarantee Co.,Ltd. Pledgor: HARBIN ENGINEERING UNIVERSITY SHIP EQUIPMENT & TECHNOLOGY CO.,LTD. Registration number: Y2022230000005 |