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Gladstone Furnace Company, Inc. Patents
Gladstone Furnace Company, Inc.
Kansas City, MO
No. of patents:

Patent Number Title Of Patent Date Issued
4446848 Fireplace insert construction May 8, 1984
Improvements in fireplace heaters or devices for efficiently extracting heat from a conventional fireplace; a fireplace enclosure with novel heat exchange and absorption means; a prefabricated installation for use in a conventional fireplace to obtain the maximum utilization of the heat

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