04112915 is referenced by 10 patents and cites 7 patents.

A fireplace enclosure with glass doors to prevent heat loss from the room in which the fireplace is located, the enclosure having heat exchanging means connected to its frame structure so that the enclosure and heat exchanging means becomes a free-standing unit that may be installed in position with respect to a fireplace opening in a manner such as that heretofore used in installing the enclosure alone.

Title
Fireplace enclosure with heat exchanger
Application Number
5/786409
Publication Number
4112915
Application Date
April 11, 1977
Publication Date
September 12, 1978
Inventor
John W Slavik
5275 Mahoning NW., Warren, 44485
OH, US
Agent
Michael Williams
IPC
F24B 7/00
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