USD467656SExpiredUtility

Respirator facemask

83
Assignee: 3M INNOVATIVE PROPERTIES COPriority: Jun 25, 2001Filed: Jun 25, 2001Granted: Dec 24, 2002
Est. expiryJun 25, 2021(expired)· nominal 20-yr term from priority
Inventors:William A. MittelstadtDavid M. CastiglioneCasey L. Carlson
83
PatentIndex Score
28
Cited by
22
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a respirator facemask, as shown and described.

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