USD431328SExpiredUtility
Two-piece welding helmet
Est. expiryApr 9, 2019(expired)· nominal 20-yr term from priority
Inventors:Mark Tanner
71
PatentIndex Score
20
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14
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a two-piece welding helmet, as shown and described.
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