Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1980-03-24
1982-04-06
O'Keefe, Veronica
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D25 74, D2399
Patent
active
D02637340
REFERENCES:
patent: 3004640 (1961-10-01), Macomber
patent: 3331946 (1967-07-01), Bilbro
patent: 3548159 (1970-12-01), Ellstroem
patent: 4281238 (1981-07-01), Noma et al.
Brent Richard W.
Cunningham Donald M.
Stover John C.
Emerson Electric Co.
O'Keefe Veronica
Williams Michael
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