USD479631SExpiredUtility

Welding helmet

28
Assignee: POLISON CORPPriority: Nov 15, 2002Filed: Nov 15, 2002Granted: Sep 9, 2003
Est. expiryNov 15, 2022(expired)· nominal 20-yr term from priority
Inventors:Chen-San Cheng
28
PatentIndex Score
0
Cited by
6
References
1
Claims

Claims

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

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