Heat exchanger and method of making same
United States Patent 2181927

Inventors:
Townsend, Albert J.
Publication Date:
12/05/1939
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Assignee:
Townsend, Albert J.
Primary Class:
165/147
Other Classes:
165/175, 165/181, 165/179, D23/323, 165/165, 29/DIG.041, 29/890.048
International Classes:
F28F1/02; F28F1/36; F28F1/12