USD259206SExpiredUtility

Evaporative cooler

54
Individually held — no corporate assignee on recordPriority: Dec 4, 1978Filed: Dec 4, 1978Granted: May 12, 1981
Est. expiryDec 4, 1998(expired)· nominal 20-yr term from priority
Inventors:Joseph R. Parren
54
PatentIndex Score
5
Cited by
3
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an evaporative cooler, as shown.

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