Step-filter dustproof half-face mask
CN309578015SActive Publication Date: 2025-10-31CHINA ACAD OF SAFETY SCI & TECH
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Patent Information
- Application Number
- CN202530052048.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Designs(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-26
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2040-01-26
Smart Images
Figure 000007_ABST
Abstract
1. Name of the product in this design: Cascade Filter Dustproof Half-Face Mask. 2. Purpose of this design: It is mainly used by workers in dusty work environments to prevent dust from entering the mouth or lungs through respiration. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.
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