USD475781SExpiredUtility

Coupling ring for ventilation ducts

85
Assignee: LINDAB ABPriority: Jan 17, 2001Filed: Dec 13, 2001Granted: Jun 10, 2003
Est. expiryJan 17, 2021(expired)· nominal 20-yr term from priority
Inventors:Lars-Åke MattssonKenneth LennartssonSten HögmanCarl-Gustaf Sonden
85
PatentIndex Score
27
Cited by
6
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a coupling ring for ventilation ducts, as shown.

Join the waitlist — get patent alerts

Track USD475781S — get alerts on status changes and closely related new filings.

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