USD503787SExpiredUtility
Air purifier
Est. expiryJul 14, 2023(expired)· nominal 20-yr term from priority
Inventors:Takeo Koike
71
PatentIndex Score
17
Cited by
3
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for an “air purifier,” as shown and described.
Join the waitlist — get patent alerts
Track USD503787S — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.