Digital Commonwealth — Boston Public Library
This Could Heat a Nine-Room House - In the midst of a cold wave this small experimental heat generator was demonstrated by Raytheon Co. in Lexington, Mass., today. The inventor William H. Hapgood shows generator which is so efficient despite its small size he says it could heat a nine-room house. The gas burning device is a by-product of research on ways of cooling high powered electronic tubes.
Associated Press · [ca. December 1968]
[Information from item housing] Furnace
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