USD393933SExpiredUtility

Welding mask

Assignee: OTOS OPTICAL CO LTDPriority: Apr 10, 1996Filed: Apr 10, 1996Granted: Apr 28, 1998

Est. expiryApr 10, 2016(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The design for a welding mask, as shown and described.

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