USD540990SExpiredUtility

Welding mask

87
Assignee: OTOS TECH CO LTDPriority: Aug 31, 2005Filed: Aug 31, 2005Granted: Apr 17, 2007
Est. expiryAug 31, 2025(expired)· nominal 20-yr term from priority
Inventors:Moon Young Huh
87
PatentIndex Score
35
Cited by
6
References
1
Claims

Claims

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

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