USD472081SExpiredUtility

Chair control mechanism

Assignee: CHEN SU-MINGPriority: Apr 29, 2002Filed: Apr 29, 2002Granted: Mar 25, 2003

Est. expiryApr 29, 2022(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for chair control mechanism, as shown and described.

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