USD411880SExpiredUtility

Air purification unit

44
Individually held — no corporate assignee on recordPriority: Jul 8, 1998Filed: Jul 8, 1998Granted: Jul 6, 1999
Est. expiryJul 8, 2018(expired)· nominal 20-yr term from priority
Inventors:Richard R. CappadonaVincent G. Lobdell
44
PatentIndex Score
6
Cited by
2
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an air purification unit, as shown.

Join the waitlist — get patent alerts

Track USD411880S — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.