Air heating apparatus
United States Patent 3140706

Inventors:
Leo, Block
Hollingsworth, John H.
Publication Date:
07/14/1964
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Assignee:
CARRIER CORP
Primary Class:
126/110R
Other Classes:
126/114
International Classes:
F24H3/10; F24H3/02
US Patent References:
2582071Suspended air-heating furnace
2808047Gas fired hot air furnace
2864359Space heater