USD918379SActiveUtility

Mask valve

59
Assignee: CHEN TIANXIANGPriority: Jul 30, 2020Filed: Aug 26, 2020Granted: May 4, 2021
Est. expiryJul 30, 2040(~14 yrs left)· nominal 20-yr term from priority
Inventors:Tianxiang Chen
59
PatentIndex Score
3
Cited by
15
References
1
Claims

Claims

exact text as granted — not AI-modified
CLAIM 
     
       The ornamental design for a mask valve, as shown and described.

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