USD646380SExpiredUtility

Grey respiratory mask having black lines of demarcation

Assignee: 3M INNOVATIVE PROPERTIES COPriority: Jun 27, 2005Filed: Jun 27, 2005Granted: Oct 4, 2011

Est. expiryJun 27, 2025(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for a grey respiratory mask having black lines of demarcation, as shown and described.

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