USD919188SActiveUtility

Protective mask

50
Assignee: ANHUI HENGYU OPTICAL ELECTRONICS CO LTDPriority: Jan 24, 2019Filed: May 10, 2019Granted: May 11, 2021
Est. expiryJan 24, 2039(~12.5 yrs left)· nominal 20-yr term from priority
Inventors:Haijian Sun
50
PatentIndex Score
7
Cited by
5
References
1
Claims

Claims

exact text as granted — not AI-modified
CLAIM 
     
       I claim the ornamental design for the protective mask, as shown and described.

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