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