USD538922SExpiredUtility
Airway heat and moisture exchanger
Est. expirySep 13, 2025(expired)· nominal 20-yr term from priority
Inventors:Mark Andrew Graham
49
PatentIndex Score
8
Cited by
13
References
1
Claims
Claims
exact text as granted — not AI-modifiedCLAIM
The ornamental design for airway heat and moisture exchanger, as shown and described.Join the waitlist — get patent alerts
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