Evaporative cooler

Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified

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D2304

Patent

active

D02442949

REFERENCES:
patent: D163482 (1951-05-01), Reichelderfer et al.
patent: D163483 (1951-05-01), Reichelderfer et al.
patent: D215053 (1969-08-01), Haskin
patent: 1238068 (1917-08-01), Slater et al.
patent: 2626136 (1953-01-01), Krauss
patent: 2769620 (1956-11-01), Davison
patent: 2920717 (1960-01-01), Tuttle et al.
patent: 3583174 (1971-06-01), Logue

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