Tunnel emergency smoke removal device

CN309276386SActive Publication Date: 2025-05-06ZHEJIANG TIANQING ENVIRONMENTAL PROTECTION TECH CO LTD
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Patent Information

Application Number
CN202430599906.4
Authority / Receiving Office
CN · China
Patent Type
Designs(China)
Current Assignee / Owner
Filing Date
2024-09-20
Publication Date
2025-05-06
Estimated Expiration
2039-09-20

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Abstract

1. The name of this design product: Tunnel emergency smoke removal device. 2. Purpose of this product design: used for emergency smoke removal in tunnels. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.
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