USD420438SExpiredUtility
Air purifier
Est. expirySep 25, 2018(expired)· nominal 20-yr term from priority
Inventors:Rene C. Pinchuk
92
PatentIndex Score
44
Cited by
2
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for an air purifier, as shown.
Join the waitlist — get patent alerts
Track USD420438S — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.