USD646380SExpiredUtility

Grey respiratory mask having black lines of demarcation

73
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
Inventors:Yonas GebrewoldDean M. Remer
73
PatentIndex Score
21
Cited by
17
References
1
Claims

Claims

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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