Combination guard and heat transfer device
United States Patent 1942211

Inventors:
Hartwig, Charles W.
Publication Date:
01/02/1934
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Assignee:
Hartwig, Charles W.
Primary Class:
165/134.100
Other Classes:
165/183, 62/515, 122/367.300, 165/164, 165/131
International Classes:
F28D1/053; F28F1/10; F28F1/20; F28F19/00; F28D1/04; F28F1/12