USD410291SExpiredUtility

Soundproof wall unit

Assignee: SANKEN STEEL CO LTDPriority: Jul 7, 1997Filed: Jul 7, 1997Granted: May 25, 1999

Est. expiryJul 7, 2017(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for a soundproof wall unit, as shown.

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