Title:
Heating unit for electrically-heated tools
United States Patent 1407692

Inventors:
Frank, Kuhn
Thomas, Lawrence H.
Spiess, Jules G.
Publication Date:
02/28/1922
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Assignee:
AMERICAN ELECTRICAL HEATER CO
Primary Class:
219/520
Other Classes:
219/221, 219/553, 219/552, 219/544, 219/201, 219/546
International Classes:
H05B3/00