Thin film mask
CN309705469SActive Publication Date: 2025-12-26CHINA RAILWAY 11TH BUREAU GRP CORP LTD +2
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Patent Information
- Application Number
- CN202530257832.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Designs(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-09
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2040-05-09
Smart Images
Figure 000003_ABST
Abstract
1. The name of the design product: thin film mask. 2. The use of the design product: used as a mask for shield belt pressure exchange tool operators to breathe oxygen during decompression. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective drawing.
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