Air preheater
United States Patent 1914604

Inventors:
Keenan Jr., Walter F.
Stanley, Wetherald Joseph
Publication Date:
06/20/1933
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Assignee:
FOSTER WHEELER CORP
Primary Class:
165/97
Other Classes:
165/103, 122/DIG.001, 165/166, 165/101, 165/134.100
International Classes:
F28D9/00