Mask valve
Description
The broken lines in the drawings depict portions of the mask valve that form no part of the claimed design.
Claims
The ornamental design for a mask valve, as shown and described.
Referenced Cited
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- Dust Mask with Active Carbon Filters and Breathing Valve. Actitop. Amazon.com. Date first available: Jun. 28, 2020. Retrieved from internet: https://www.amazon.com/Active-Filters-Breathing-Reusable-Washable/dp/B08BYN7L7S (Year: 2020).
Patent History
Patent number: D918379
Type: Grant
Filed: Aug 26, 2020
Date of Patent: May 4, 2021
Inventor: Tianxiang Chen (Yiwu)
Primary Examiner: Lilyana Bekic
Application Number: 29/747,936
Type: Grant
Filed: Aug 26, 2020
Date of Patent: May 4, 2021
Inventor: Tianxiang Chen (Yiwu)
Primary Examiner: Lilyana Bekic
Application Number: 29/747,936
Classifications