Title:
Air preheater for locomotives
United States Patent 1740696

Inventors:
Fredrik, Ljungstrom
Isidor, Broberg
Otto, Friksson Erik
Publication Date:
12/24/1929
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Assignee:
LJUNGSTROMS ANGTURBIN AB
Primary Class:
110/201
Other Classes:
110/162, 165/7
International Classes:
F23M13/00