Furnace heat indicator
United States Patent 2404147
Inventors:
Strickland Jr., Harold A.
Publication Date:
07/16/1946
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Export Citation:
Assignee:
BUDD EDWARD G MFG CO
Primary Class:
Other Classes:
432/46, 361/175, 266/90, 250/205, 250/233, 219/667, 219/425, 250/215, 266/87, 236/15R
International Classes:
C21D11/00; G01J5/52; G05D23/27; H05B6/02; H05B6/06