Fire door (tunnel two-way opening)

CN309514372SActive Publication Date: 2025-09-23HEBEI HONGKANG DOOR IND CO LTD
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Patent Information

Application Number
CN202430724128.7
Authority / Receiving Office
CN · China
Patent Type
Designs(China)
Current Assignee / Owner
Filing Date
2024-11-15
Publication Date
2025-09-23
Estimated Expiration
2039-11-15

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Abstract

1. Name of this design product: Fire door (tunnel two-way opening). 2. Purpose of this design product: This design product is used for a two-way opening fire door in a tunnel. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.
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