Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1976-07-26
1978-05-02
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2303
Patent
active
D02478196
REFERENCES:
patent: D187770 (1960-04-01), Du Sell
patent: D191999 (1961-12-01), Haralson
patent: D207936 (1967-06-01), Jonas
patent: D231933 (1974-06-01), Andrew
patent: D237084 (1975-10-01), Collver
patent: 3174473 (1965-03-01), Swanstrom, Sr. et al.
patent: 3190279 (1965-06-01), Davis
Lever Paul H.
Mohr Clifford D.
Fireplace Corporation of America
Largen James R.
Young Thomas N.
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