USD288356SExpiredUtility
Airtight wood and coal box heater
Individually held — no corporate assignee on recordPriority: Nov 8, 1984Filed: Nov 8, 1984Granted: Feb 17, 1987
Est. expiryNov 8, 2004(expired)· nominal 20-yr term from priority
Inventors:Jenny T. Mckinney
41
PatentIndex Score
5
Cited by
6
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for an airtight wood and coal box heater, as shown.
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