Title:
Chimney construction with heat controlling minimizing means
United States Patent 2634720
Inventors:
Thulman, Robert K.
Publication Date:
04/14/1953
Export Citation:
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Assignee:
Thulman, Robert K.
Primary Class:
126/307R
Other Classes:
52/219, 237/55, 454/43
International Classes:
F23J13/02; F23L17/02; F23J13/00; F23L17/00
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US Patent References:
2446729Chimney insulation
2381548Chimney construction
2358397Means for ventilating attic spaces
2130385Muffler and ventilator system
Foreign References:
GB188600157A
CH184224A