Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1982-09-29
1984-08-07
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
Patent
active
D02750309
REFERENCES:
patent: D230153 (1974-01-01), Hoyle et al.
patent: D232361 (1974-08-01), Martin, Jr. et al.
patent: D240357 (1976-06-01), Hoyle et al.
patent: D244293 (1977-05-01), Carluccio
patent: D258757 (1981-03-01), Jordan
patent: 3908393 (1975-09-01), Eubank
patent: 4043777 (1977-08-01), Parren
patent: 4351781 (1982-09-01), Blatter
Heating & Air Conditioning Contractor, Dec. 1972, p. 10, "Power Saver Series" item.
Largen James R.
Nelson Gregory J.
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