USD285831SExpiredUtility
Coal ash separator
Individually held — no corporate assignee on recordPriority: Jan 16, 1984Filed: Jan 16, 1984Granted: Sep 23, 1986
Est. expiryJan 16, 2004(expired)· nominal 20-yr term from priority
Inventors:Robert Warnke
50
PatentIndex Score
8
Cited by
12
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a coal ash separator, as shown and described.
Join the waitlist — get patent alerts
Track USD285831S — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.