Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-05-15
1981-01-27
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2304
Patent
active
D02580837
REFERENCES:
patent: D219449 (1970-12-01), Ortega et al.
patent: D231354 (1974-04-01), Hoyle
patent: D242462 (1976-11-01), Shames
patent: 2240617 (1941-05-01), Harrigan
patent: 3011424 (1961-12-01), Kohnen
Washington Post, Sec. A 28, Friday Jun. 18, 1971, "9000 BTU", Air Conditioner.
Mart Magazine, Nov. 11, 1968, p. 12, "Gibson", Advertisement.
Gammell Enterprises
Largen James R.
Sheridan Philip H.
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