USD288357SExpiredUtility

Airtight convection heater

25
Individually held — no corporate assignee on recordPriority: Apr 30, 1984Filed: Apr 30, 1984Granted: Feb 17, 1987
Est. expiryApr 30, 2004(expired)· nominal 20-yr term from priority
Inventors:Jenny T. Mckinney
25
PatentIndex Score
1
Cited by
6
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an airtight convection heater, as shown.

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