USD448472SExpiredUtility

Respiratory mask

84
Assignee: 3M INNOVATIVE PROPERTIES COPriority: Feb 17, 1999Filed: Feb 17, 1999Granted: Sep 25, 2001
Est. expiryFeb 17, 2019(expired)· nominal 20-yr term from priority
Inventors:Daniel T. Chen
84
PatentIndex Score
29
Cited by
10
References
1
Claims

Claims

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

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