Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-12-21
1980-07-15
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23 71, D2302
Patent
active
D02559226
REFERENCES:
patent: D135469 (1943-04-01), Dunn
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patent: 2548238 (1951-04-01), Potts et al.
patent: 2716244 (1955-08-01), Wendel
patent: 2742650 (1956-04-01), Mohun et al.
patent: 2825070 (1958-03-01), Alexander et al.
Price Marilyn E.
Price Ronald V.
Chung Eric T. S.
Largen James R.
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