USD511291SExpiredUtility
Doorknob
Est. expiryApr 14, 2024(expired)· nominal 20-yr term from priority
Inventors:Mark Van Handel
65
PatentIndex Score
11
Cited by
26
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a doorknob, as shown and described.
Join the waitlist — get patent alerts
Track USD511291S — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.