Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1981-06-16
1984-05-01
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
Patent
active
D02737027
REFERENCES:
patent: 2053091 (1936-09-01), Caldwell
patent: 2271327 (1942-01-01), Chirgwin
patent: 4320695 (1982-03-01), Widerby et al.
Carlsson Sven H.
Widerby Lennart
AB Svenska Flaktfabriken
Largen James R.
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