USD489492SExpiredUtility

Welding mask

93
Priority: Mar 21, 2003Filed: Mar 21, 2003Granted: May 4, 2004
Est. expiryMar 21, 2023(expired)· nominal 20-yr term from priority
Inventors:Ziqian Wu
93
PatentIndex Score
49
Cited by
10
References
1
Claims

Claims

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

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