Title:
Heating apparatus
United States Patent 2500676

Inventors:
Hall, William M.
Gross, Fritz A.
Publication Date:
03/14/1950
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Assignee:
RAYTHEON MFG CO
Primary Class:
Other Classes:
99/DIG.014, 333/227, 264/DIG.046
International Classes:
H05B6/76
US Patent References:
2415962Automatic switch for ultra high frequency
2439388Resonator wave meter