Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1983-03-11
1986-04-01
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
Patent
active
D02832461
REFERENCES:
patent: D134606 (1942-12-01), Hiller
patent: D186915 (1959-12-01), Nettles
patent: D208016 (1967-06-01), Bullard
patent: D211875 (1968-08-01), Porter
patent: D236617 (1975-09-01), Lee et al.
patent: D245255 (1977-08-01), Porter
patent: 3960168 (1976-06-01), Plumpton
patent: 4352370 (1982-10-01), Childress
Largen James R.
Wel-Loc, Inc.
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