USD456506SExpiredUtility

Tracheostomy air filtration device

16
Priority: Feb 11, 1999Filed: Feb 2, 2001Granted: Apr 30, 2002
Est. expiryFeb 11, 2019(expired)· nominal 20-yr term from priority
Inventors:Eileen Haas
16
PatentIndex Score
0
Cited by
2
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a tracheostomy air filtration device, as shown.

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