USD273323SExpiredUtility

Fireplace heat exchanger

12
Assignee: 432698 ONTARIO LTDPriority: Feb 9, 1981Filed: Aug 7, 1981Granted: Apr 3, 1984
Est. expiryFeb 9, 2001(expired)· nominal 20-yr term from priority
Inventors:Keith J. Davidson
12
PatentIndex Score
1
Cited by
5
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a fireplace heat exchanger, as shown and described.

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