USD254388SExpiredUtility

Combined grate and fireplace heat exchanger

Assignee: ARVIN IND INCPriority: Feb 21, 1978Filed: Feb 21, 1978Granted: Mar 4, 1980

Est. expiryFeb 21, 1998(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for a combined grate and fireplace heat exchanger, as shown and described.

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