CN210623693U - 防火止回阀 - Google Patents
防火止回阀 Download PDFInfo
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- CN210623693U CN210623693U CN201920882904.XU CN201920882904U CN210623693U CN 210623693 U CN210623693 U CN 210623693U CN 201920882904 U CN201920882904 U CN 201920882904U CN 210623693 U CN210623693 U CN 210623693U
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- smoke
- valve plate
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CN201920882904.XU CN210623693U (zh) | 2019-06-12 | 2019-06-12 | 防火止回阀 |
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CN201920882904.XU CN210623693U (zh) | 2019-06-12 | 2019-06-12 | 防火止回阀 |
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CN210623693U true CN210623693U (zh) | 2020-05-26 |
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CN201920882904.XU Active CN210623693U (zh) | 2019-06-12 | 2019-06-12 | 防火止回阀 |
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
EE01 | Entry into force of recordation of patent licensing contract | ||
EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Lianzhi (Beijing) Technical Service Co., Ltd Assignor: HANGZHOU XIAOMI ENVIRONMENT TECHNOLOGY Co.,Ltd. Contract record no.: X2020990000381 Denomination of utility model: Fireproof check valve Granted publication date: 20200526 License type: Exclusive License Record date: 20200727 |
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EC01 | Cancellation of recordation of patent licensing contract | ||
EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Lianzhi (Beijing) Technical Service Co., Ltd Assignor: HANGZHOU XIAOMI ENVIRONMENT TECHNOLOGY Co.,Ltd. Contract record no.: X2020990000381 Date of cancellation: 20201113 |
|
EE01 | Entry into force of recordation of patent licensing contract | ||
EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Lianzhi (Beijing) Technical Service Co., Ltd Assignor: HANGZHOU XIAOMI ENVIRONMENT TECHNOLOGY Co.,Ltd. Contract record no.: X2020990000595 Denomination of utility model: Fire check valve Granted publication date: 20200526 License type: Exclusive License Record date: 20201113 |