Fireplace heat exchanger device

Details Fireplace heat exchanger device Fireplace heat exchanger device

1977-08-04

1979-06-05

Burke, Wallace R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D 7207, D2303, D0708

Patent

active

D02520419

REFERENCES:
patent: D245097 (1977-07-01), Boyd
patent: 3905351 (1975-09-01), Hatfield et al.
patent: 4078542 (1978-03-01), Young et al.

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