Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-06-27
1979-04-24
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02516748
REFERENCES:
patent: D201053 (1965-05-01), Albinson
patent: D219446 (1970-12-01), Arros
patent: 2806622 (1957-09-01), Leirer
patent: 3244312 (1966-04-01), Lawson
patent: 3406855 (1968-10-01), McKechnie
Largen James R.
Malin Eugene F.
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