USD284132SExpiredUtility
Rectangular double donut
Individually held — no corporate assignee on recordPriority: Aug 1, 1983Filed: Aug 1, 1983Granted: Jun 10, 1986
Est. expiryAug 1, 2003(expired)· nominal 20-yr term from priority
Inventors:David M. Larson
77
PatentIndex Score
18
Cited by
5
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for rectangular double donut, as shown and described.
Join the waitlist — get patent alerts
Track USD284132S — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.