Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1980-09-02
1982-11-23
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
4564, D2302
Patent
active
D02670330
REFERENCES:
patent: D244711 (1977-06-01), Armbruster
patent: D246728 (1977-12-01), Wormser
patent: D247044 (1978-01-01), Johansson
patent: 3477069 (1969-11-01), Stiger
patent: 3559634 (1971-02-01), Lillywhite
patent: 3889304 (1975-06-01), Loren
patent: 4028751 (1977-06-01), Moran
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