Countercurrent heat exchanger
United States Patent 2229344

Inventors:
Otto, Schneider
Publication Date:
01/21/1941
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Assignee:
Robert, Schwarz
Primary Class:
165/162
Other Classes:
165/76, 165/143, 165/DIG.424, 165/78, 165/81
International Classes:
F22D1/00; F28F9/013; F28F9/02; F28F9/26; F28F9/007